Use of product-A rotary table is a precision work positioning device used in metalworking. It enables the operator to drill or cut work at exact intervals around a fixed (usually horizontal or vertical) axis. A round vise is used for securely holding round or cylindrical workpieces during machining, drilling, grinding, or inspection processes. Its design allows for stable and precise positioning, facilitating accurate and consistent operations on the workpiece. Key Features: 3" (80 mm) Rotary Table Compact & Low-Profile Design: Table Diameter: The rotary table features a 3-inch (80 mm) diameter, making it perfect for small-scale milling operations where space and precision are critical. Vertical Height: With a vertical height of just 1-5/8 inches, this rotary table maintains a low profile, enabling it to fit seamlessly into your existing setup while maximizing available workspace. Precision Engineering: Gear Ratio: The rotary table boasts a 36:1 gear ratio, ensuring precise control over the rotation. One full rotation of the handle results in a 10-degree rotation of the table, allowing for meticulous adjustments during milling tasks. Scale Calibration: The table scale is finely calibrated in 5-degree increments, providing clear and accurate angle measurements. This feature is particularly useful for tasks requiring high precision and consistency. Versatile Positioning: Horizontal & Vertical Use: This rotary table is designed for maximum versatility, capable of operating in both horizontal and vertical positions. This dual functionality allows for a wide range of applications, from simple flat milling to more complex angular cuts. Robust Construction: Base Dimensions: The base of the rotary table measures 4-1/8" x 3-1/4", providing a stable and secure platform for your work. The compact dimensions ensure that the table remains sturdy during use, minimizing vibrations and enhancing accuracy. T-Slots: The base is equipped with four 5/16" T-slots, allowing for secure clamping of workpieces. These slots are designed to accommodate various clamping setups, ensuring your workpiece remains firmly in place throughout the milling process. 3" (80 mm) Round Vice Made form Quality close grain Caste Iron -Designed to fit our 3" (75 mm) & 4"(100 mm) Rotary Tables Diameter of Base : 80 mm * Jaw Width : 54 mm * Jaw Depth: 20 mm * Jaw Opening : 32 mm * Height : 29 mm These vices are counter- drilled in a manner that these can fit to a 3 as well 4 slot table. The moving jaw has V-grooves to hold Round objects. Precisely Ground on Base,Top, Jaws & Base. Rest Body is painted for a long rust free life.

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A rotary table is used to rotate a workpiece precisely during machining, allowing for accurate creation of circular features, angles, and indexing tasks. A chuck is used to securely hold and grip a workpiece on a machine tool, ensuring it remains stable and aligned during operations like turning, drilling, or milling. Chuck 70 mm 4 Jaw Independent Precision 70 mm 4-Jaw Independent Lathe Chuck Compatible with M14 x 1 mm threading 3"/ 80 mm Rotary Table Small low profile Rotary Table for Milling operation with Table Diameter - 3 Inches (80 mm) Vertical Height - 1-5/8 Inch Gear Ratio - 36:1, which basically means that the 1 rotation of the handle shall rotate the table by 10 degrees. Base Dimensions: 4. 1/8" x 3. 1/4" 4 T-Slots: 5/16" Table scale is calibrated in 5 degree increment. Can be used both in horizontal & vertical position. 3"/ 80 mm tilting Table Low Profile Precision Mini Rotary Table 3" 75mm is manufactured from Seasoned casting. Worm- Gear Ratio - 36:1, which basically means that the 1 rotation of the handle shall rotate the table by 10 degrees. Can be used both in horizontal & vertical position. Weight-3 Kg Material :- Tool Steel & Casting 4"/ 100 mm Regular Table Very High Quality 4" /100 mm Regular Rotary Table designed for smaller milling machines Table is graduated 360 Degrees. Worm Gear Ratio -1:36, which means that the 1 handle rotation shall turn the table by 10 Degrees. Center Height in vertical position: 2-1/16" (50 mm approx) Hand wheel is graduated in divisions of 10 min & can be set to zero. Can be mounted both in Horizontal & vertical position. 4"/ 100 mm tilting Table Horizontal & Vertical Rotary Table 4" Table height 66 mm in flat position Table graduated 360 degrees in 5 degree divisions. Rotary Tables deliver precise, continuous rotating motion for scanning, assembly, testing and production. They are a convenient, accurate method of quickly positioning a payload. The tables use a rugged worm and gear drive design with a central rotating ball bearing.

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A Woodruff cutter, also known as a Woodruff keyseat cutter, is a specialized tool used in machining to create Woodruff keyseats, which are semicircular slots cut into a shaft. These keyseats are designed to hold Woodruff keys, which are small, semicircular metal pieces used to lock gears, pulleys, or other machine components onto a rotating shaft. Upgrade your machining capabilities with our premium HSS M2 Grade Woodruff Hardened Keyseat Cutter Set. This set includes 10 precision-engineered straight tooth cutters, designed for creating accurate grooves or slots to accommodate engagement keys. These cutters are essential for key shaft applications, ensuring secure and precise fits to prevent unwanted rotation or movement. Key Features: High-Quality Material: Crafted from HSS M2 grade steel, these cutters offer superior hardness and durability, ensuring long-lasting performance even in demanding conditions. Comprehensive Set: This set includes 10 pieces with varying dimensions to suit a wide range of applications. Shank Diameter: 1/2" shank diameter, compatible with standard milling machines. Straight Tooth Design: Provides clean and precise cuts, making it ideal for producing keyseats with consistent accuracy. Cutter Dimensions (Dia x Thickness): STD 403: 3/8" x 1/2" STD 204: 1/2" x 1/16" STD 404: 1/2" x 1/8" STD 305: 5/8" x 3/32" STD 505: 5/8" x 5/32" STD 406: 3/4" x 1/8" STD 606: 3/4" x 3/16" STD 806: 3/4" x 1/4" STD 608: 1" x 3/16" STD 808: 1" x 1/4" Application: Ideal for machining keyseats in various materials, these cutters are indispensable for mechanical engineers and machinists working on key shafts, offering reliable performance for precise keyseat creation. Why Choose Our Woodruff Cutter Set? Our Woodruff cutters are meticulously crafted to meet industrial standards, ensuring you get the best tool for your machining needs. Whether you're a professional machinist or an industrial buyer, this set provides the versatility and durability required for a wide range of projects. Order Now: Enhance your machining toolkit with this comprehensive Woodruff cutter set and achieve precise, reliable results every time.

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A rotary table is a precision tool used predominantly in metalworking, particularly in machining operations like milling and drilling. Its primary function lies in enabling machining at precise angular intervals around a fixed point, commonly referred to as indexing. This capability facilitates the creation of intricate geometries, circular features, and multi-sided machining without the need for manual repositioning of the workpiece. By mounting the workpiece on the rotary table and rotating it, machinists can execute complex operations such as gear cutting, spiral grooving, and helical cuts with high precision. Additionally, rotary tables are essential for tasks requiring circular or arc-shaped machining, offering versatility and efficiency in manufacturing processes. 4"// 100 mm Rotary Table Dual functionality: Can be used horizontally or vertically to accommodate a wide range of machining tasks. Generous 4" inch (100 mm) diameter provides ample space for various workpieces. Smooth rotary motion ensures precise positioning and milling operations. Sturdy construction for durability and long-lasting performance. Compatible with both horizontal and vertical milling machines, enhancing flexibility in your workshop. Precision-machined for exceptional accuracy, delivering reliable results with every use. 3"// 80  Round vice Made of high grade close grain caste Iron. Fits our 3" (75 mm) Rotary Tables perfectly. These vices are drilled in a manner that these can fit to a 3 as well 4 slot table. Diameter of Base : 80 mm Jaw Width : 54 mm Jaw Depth: 20 mm Jaw Opening : 32 mm Height : 29 mm 4"// 100 mm Round vice Made of high grade close grain caste Iron. Fits our 3" (75 mm) Rotary Tables perfectly. These vices are drilled in a manner that these can fit to a 3 as well 4 slot table. Diameter of Base : 100 mm Jaw Width : 79 mm Jaw Depth: 20.5 mm Jaw Opening : 40 mm Height : 33 mm

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A rotary table is used to rotate a workpiece precisely during machining, allowing for accurate creation of circular features, angles, and indexing tasks. A chuck is used to securely hold and grip a workpiece on a machine tool, ensuring it remains stable and aligned during operations like turning, drilling, or milling. 3"/ 80 mm Rotary Table Small low profile Rotary Table for Milling operation with Table Diameter - 3 Inches (80 mm) Vertical Height - 1-5/8 Inch Gear Ratio - 36:1, which basically means that the 1 rotation of the handle shall rotate the table by 10 degrees. Base Dimensions: 4. 1/8" x 3. 1/4" 4 T-Slots: 5/16" Table scale is calibrated in 5 degree increement. Can be used both in horizontal & vertical position. Chuck 50mm 3 Jaw Self Centering Precision 50 mm 3-Jaw Self-Centering Lathe Chuck Compatible with M12 x 1 mm threading Chuck 50 mm 4 Jaw Self Centering Precision 50 mm 4-Jaw Self-Centering Lathe Chuck Compatible with M12 x 1 mm threading Chuck 50 mm 4 Jaw Independent Precision 50 mm 4-Jaw Independent Lathe Chuck Compatible with M12 x 1 mm threading Chuck 65 mm 3 Jaw Self Centering Precision 65mm 3-Jaw Self-Centering Lathe Chuck Compatible with M14 x 1 mm threading Chuck 65 mm 4 Jaw Self Centering Precision 65mm 4-Jaw Self-Centering Lathe Chuck Compatible with M14 x 1 mm threading Chuck 70 mm 4 Jaw Independent Precision 70 mm 4-Jaw Independent Lathe Chuck Compatible with M14 x 1 mm threading Chuck 80 mm 3 Jaw Self Centering Recess is 55 mm Total Height excluding the jaws (Only Body) : 45 mm. The Back plate is drilled with M6 size tapped holes for the chuck's bolts to be screwed with the back plate and then provided with 2 counter drills to them clamp it with the Rotary table's T slots. 80 mm 3 jaw self centering chuck with spare set of reversible jaws and a chuck key, Also included a suitable steel back plate with fixing t nuts and bolts to enable this to mount it on this. The Chuck body is made of high grain casting and the jaws are made of hardened tool steel for a long life. The chuck recess is 55 mm same as that of the back plate. The back plate has a 13.9 mm small spigot that helps it in centrally locate it in the center of the Rotary Table. Chuck 80 mm 4 Jaw Independent 80 mm 4 Jaw Independent Chuck with a Backplate & 3 Sets of T-Nuts The other side of the Back plate has a small spigot to fit /adjust into the center of the Rotary table for better accuracy and Fitting. Supplied with Fixing T nuts Bolts. Body is made of Graded Casting. Jaws are of Alloy Tool Steel -Hardened and Ground Supplied with a Tool Steel Back Plate having same recess as that of the chuck. The plate is threaded drilled in a manner that the chuck can be screwed to the Back Plate The Back plate has been counter drilled to fit to our 3"/ 80mm & 4"/ 100 mm Rotary tables.

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The chuck for a rotary table typically has jaws or clamps that can be adjusted to securely grip the workpiece. It ensures that the workpiece remains stable and properly aligned during the machining process, allowing for accurate and consistent results. This is especially important for tasks that require precise positioning or multiple machining operations on different sides of the workpiece. Enhance the precision and versatility of your rotary tables and mini lathes with our high-quality small chucks. Designed for 3" (80 mm) and 4" (100 mm) rotary tables, these chucks come with durable steel back plates, ensuring a secure and reliable fit for various machining tasks. Key Features: High-Quality Construction: Crafted from premium-grade steel, our chucks offer exceptional durability and longevity. The steel back plates ensure a robust connection to rotary tables and mini lathes. Precision Engineering: Engineered for high accuracy, these chucks provide excellent concentricity and grip. Ideal for precise machining operations requiring tight tolerances. Versatile Compatibility: Suitable for 3" (80 mm) and 4" (100 mm) rotary tables. Compatible with a wide range of mini lathes, making them a versatile addition to your workshop. Easy Installation: Designed for quick and straightforward installation, saving you valuable time and effort. Includes all necessary mounting hardware for hassle-free setup. Secure Grip: Features high clamping force to securely hold workpieces in place during machining. Reduces the risk of slippage and enhances safety. Technical Specifications: Chuck Sizes Available: 3" (80 mm) and 4" (100 mm) Material: Premium-Grade Steel Back Plate Material: Tool Steel Applications: Ideal for use in metalworking, woodworking, and hobbyist projects. Perfect for precision machining, turning, and drilling tasks on rotary tables and mini lathes. Package Includes: 1 x Small Chuck for 3" (80 mm) or 4" (100 mm) Rotary Table 1 x Steel Back Plate Mounting Hardware Why Choose Us: Customer-Centric Service: We are dedicated to providing exceptional customer support and ensuring your satisfaction. Expertise: With over a decade of experience in the machine tool accessories industry, we deliver products you can trust. Global Reach: Serving customers across the USA, India, and now expanding to the UK, we are committed to meeting your machining needs wherever you are. Order Yours Today: Upgrade your machining setup with our premium small chucks. Place your order now and experience the difference in quality and performance!

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The small watchmaker rotary table is a versatile tool with a multitude of uses. It's indispensable in precision watchmaking, enabling accurate drilling, milling, and engraving for crafting and repairing intricate watch components. Additionally, it's favored by jewelry makers for its ability to shape metals with precision, from setting stones to creating bespoke jewelry pieces. Small Watchmaker 2-3/4" (2.75 Inch) Rotary Table The small watchmaker rotary table is a versatile tool with a multitude of uses. It's indispensable in precision watchmaking, enabling accurate drilling, milling, and engraving for crafting and repairing intricate watch components. Additionally, it's favored by jewelry makers for its ability to shape metals with precision, from setting stones to creating bespoke jewelry pieces. Compact Design: Table Diameter of 2.75 inches (72 mm) and a height of 1.5 inches (39 mm) when laid horizontally, offering a space-efficient solution. Precision Performance: Worm-Gear Ratio of 1:48 ensures precise positioning, with each handle rotation turning the table by 7.5 degrees, ideal for intricate milling tasks. Versatile Utility: Preferred choice among Watchmakers, Jewelry Tools, Model Makers & Hobbyists for its versatility in engraving, drilling, cutting, and shaping small components. Robust Construction: Crafted with high-quality materials and precision machining, guaranteeing durability and reliability for professional workshops and hobbyist setups. Smooth Operation: Equipped with smooth ball bearings and precision gearing, enabling effortless rotation and stable operation for flawless milling results. User-Friendly: Designed with ergonomic handles and intuitive controls for ease of use, reducing operator fatigue during extended milling sessions. Trusted Performance: Trusted by professionals and hobbyists alike for consistent precision and reliability, meeting exacting standards for precision milling applications. Available in 2 slots and 4 slots 50 mm Chuck -3 Jaw Self Centering (M12 x 1) Caste Iron Body 50 mm 3 Jaws Self Chucks with Tool Steel Hardened Jaws Body Diameter 50 mm , Mounting thread M12 x 1 It can hold any long round bar up to 12 mm, which can pass through the chuck's bore. 50 mm Chuck -4 Jaw Self Centering (M12 x 1) Caste Iron Body 50 mm 3 Jaws Self Chucks with Tool Steel Hardened Jaws Body Diameter 50 mm , Mounting thread M12 x 1 It can hold any long round bar up to 12 mm, which can pass through the chuck's bore. 50 mm Chuck - 4 Independent (M12 x 1) Caste Iron Body 50 mm 4 jaw Independent Dog Chucks with Hardened Tool Steel Jaws Graded Caste Iron Body and Hardened Tool Steel Jaws Mounting thread M14 x 1, same as that of the Arbors. Jaws are Hardened & Precisely Ground. Great for Holding Small Jobs upto 12 mm diameter both for Metal or Wood Working

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A collet chuck block adapter is used to enable a CNC machine spindle to securely hold and accurately center tools of different sizes using interchangeable collets, thus enhancing machining versatility, efficiency, and precision. Features: High Precision ID Ground: The internal diameter is precisely ground to ensure exceptional accuracy and a tight fit for ER-32 collets. Blue Matched Finish: The collet chuck block features a durable blue finish, providing corrosion resistance and an aesthetically pleasing appearance. Versatile Compatibility: Compatible with ER-32 collets, making it suitable for a wide range of machining applications. Robust Construction: Made from high-quality alloy steel for superior strength and longevity. Ease of Use: Designed for quick and easy installation on CNC lathes, improving workflow efficiency. Enhanced Performance: Provides stable and reliable holding power, ensuring consistent machining results. Applications: CNC Lathe Operations Milling Machines Drilling and Tapping Precision Machining Tool and Die Making Specifications: Type: ER-32 Collet Chuck Block Adapter Material: Alloy Steel Finish: Blue Matched Internal Diameter: Precision Ground Compatibility: ER-32 Collets Comes in: Hex Shape, Square Shape Benefits: High Precision: Ensures accurate and consistent machining operations. Durable Finish: Blue matched finish offers protection against corrosion and wear. Versatility: Suitable for a wide range of CNC lathe and machining applications. Time-Saving: Quick and easy to install, reducing setup time and increasing productivity. Reliable Performance: Provides stable holding power for consistent machining results. Why Choose Our ER-32 Collet Chuck Block Adapter? Unmatched Precision: Our collet chuck block adapter is precision-engineered to meet the highest standards of accuracy, ensuring reliable performance in every use. Durability: Constructed from high-quality materials and finished with a blue matched coating, this adapter is built to withstand the rigors of heavy-duty machining. Versatile Use: Whether you’re working on a CNC lathe, milling machine, or other precision machining equipment, this adapter is designed to deliver exceptional results. Upgrade your CNC lathe operations with our Precision ID Ground Blue Matched ER-32 Collet Chuck Block Adapter and experience the difference in performance and precision.

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ER collet adapters are used to expand the range of tool sizes that can be held by a machine tool or spindle that uses ER collets. By using ER collet adapters, machinists can utilize a wider range of cutting tools without needing separate dedicated tool holders for each collet size, thereby optimizing tooling flexibility, reducing costs, and streamlining setup and changeover times in manufacturing processes. Introduction: ER collet adaptors are precision tool holders used to secure cutting tools in rotary milling tables. They provide a robust and versatile solution for various machining tasks, ensuring high accuracy and repeatability. Design and Construction: Made from high-quality, hardened steel for durability and long-lasting performance. Precision ground to ensure a perfect fit and maximum concentricity. Available in various sizes to accommodate different tool shanks. Compatibility: Designed to fit standard rotary milling tables. Compatible with a wide range of ER collet sizes (e.g., ER11, ER16, ER20) Suitable for use with CNC machines, lathes, and manual milling machines. Clamping Range: ER collets offer a wide clamping range, typically from 1mm to 34mm, depending on the collet size. Provides a secure grip on the tool, minimizing vibration and runout during machining. Advantages: High precision: Ensures accurate tool positioning and stable machining operations. Versatility: Can hold various types of tools, including end mills, drill bits, and taps. Ease of use: Simple to install and change tools quickly, reducing downtime. Improved productivity: Enhances machining efficiency by maintaining tool stability and reducing tool wear. By following these points, users can understand the key features and benefits of ER collet adaptors for rotary milling tables, ensuring they select the right adaptor for their specific machining needs.

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 How it's works: When mounted onto a rotary table, which is a precision workholding device that allows for precise positioning of workpieces, the dividing plate helps in accurately dividing the rotation of the table into equal parts. This division is crucial for tasks like cutting gears, splines, or other components that require precise angular spacing or indexing. Premium Quality Construction: Constructed from high-grade tool steel, ensuring durability and longevity for extended usage. Precision Indexing: Engineered for precise division and indexing, allowing for accurate positioning of workpieces during machining operations. Smooth Rotation: Facilitates smooth rotation on rotary tables, enabling seamless transitions between indexing positions. Versatile Compatibility: Compatible with a wide range of rotary tables, ensuring versatility and adaptability for various machining setups. Enhanced Machining Accuracy: Enables users to achieve fine increments and accurate divisions, enhancing overall machining precision. Easy Installation: Designed for hassle-free installation, allowing users to quickly integrate the indexing plates into their rotary table setups. Reliable Performance: Offers reliable performance under demanding machining conditions, ensuring consistent results with each use. Professional Grade: Ideal for both professional machinists and hobbyists alike, providing professional-grade quality for diverse machining projects. Tools Specification: Dividing Plates Set for HV4 /HV6 Rotary Table: Set Includes: 3 x Indexing Dividing Plate and accessories. Diameter of the Plates is 100 mm. Centre Hole of the Plate is 21 mm. Thickness 7 mm Plate 1 – 15, 16, 17, 18, 19, 20 Plate 2 – 21, 23, 27, 29, 31, 33 Plate 3 – 37, 39, 41, 43, 47, 49 Dividing Plates Set for HV8 /HV10/ HV12/ HV14 Rotary Table: Set Includes: 2 x Indexing Dividing Plate and accessories. Diameter of the plate is 7" and its thickness is 0.47 " Inches (12 mm) approx. All required accessories are included as photograph. No manual is included, please note. Plate A - 28, 32, 37, 39, 43, 46, 49, 53, 59 Plate B - 63, 69, 73, 79, 83, 89, 93, 99 {Internal reference: HM}  

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Purpose: The chuck for a rotary table typically has jaws or clamps that can be adjusted to securely grip the workpiece. It ensures that the workpiece remains stable and properly aligned during the machining process, allowing for accurate and consistent results. This is especially important for tasks that require precise positioning or multiple machining operations on different sides of the workpiece. Versatile Chuck Set: Upgrade your rotary table or mini lathe with this set of small chucks designed to fit  HV4 I 5 I 6 Rotary Tables and Lathe machines, enhancing their functionality and versatility. Precision Engineering: Crafted with precision to ensure optimal performance, these chucks provide secure grip and smooth rotation, essential for accurate machining and turning operations. Durable Construction: Made from high-quality caste iron, these chucks are built to withstand the rigors of machining tasks, ensuring long-lasting durability and reliability. Easy Installation: Simple to install and compatible with most rotary tables and mini lathes, these chucks allow for quick setup and seamless integration into your workshop or machining setup. Wide Application: Ideal for a variety of machining projects, these chucks enable you to securely hold workpieces of different shapes and sizes, expanding the capabilities of your rotary table or mini lathe. Compact Design: With their small size, these chucks are perfect for use with compact machinery, allowing you to maximize space efficiency in your workshop without sacrificing performance. Enhanced Efficiency: By providing a secure and stable grip on workpieces, these chucks help improve machining accuracy and efficiency, allowing you to achieve professional results with ease. Professional Results: Whether you're a hobbyist or a professional machinist, these small chucks are essential tools for achieving precision and accuracy in your machining and turning projects. {Internal Refence: HM}

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Purpose: The chuck for a rotary table typically has jaws or clamps that can be adjusted to securely grip the workpiece. It ensures that the workpiece remains stable and properly aligned during the machining process, allowing for accurate and consistent results. This is especially important for tasks that require precise positioning or multiple machining operations on different sides of the workpiece. Versatile Chuck Set: Upgrade your rotary table or mini lathe with this set of small chucks designed to fit 3" (80 mm) and 4" (100 mm) machines, enhancing their functionality and versatility. Precision Engineering: Crafted with precision to ensure optimal performance, these chucks provide secure grip and smooth rotation, essential for accurate machining and turning operations. Durable Construction: Made from high-quality materials, these chucks are built to withstand the rigors of machining tasks, ensuring long-lasting durability and reliability. Easy Installation: Simple to install and compatible with most rotary tables and mini lathes, these chucks allow for quick setup and seamless integration into your workshop or machining setup. Wide Application: Ideal for a variety of machining projects, these chucks enable you to securely hold workpieces of different shapes and sizes, expanding the capabilities of your rotary table or mini lathe. Compact Design: With their small size, these chucks are perfect for use with compact machinery, allowing you to maximize space efficiency in your workshop without sacrificing performance. Enhanced Efficiency: By providing a secure and stable grip on workpieces, these chucks help improve machining accuracy and efficiency, allowing you to achieve professional results with ease. Professional Results: Whether you're a hobbyist or a professional machinist, these small chucks are essential tools for achieving precision and accuracy in your machining and turning projects. ( 80 mm 4 Jaws Independent Dog chuck with Back Plate )  The Back plate has been counter drilled to fit to our 3"/ 80mm & 4"/ 100 mm Rotary tables. The other side of the Back plate has a small spigot to fit /adjust into the center of the Rotary table for better accuracy and Fitting. Supplied with Fixing T nuts Bolts.  ( 80 mm 3 Jaws Self Centering chuck )  3" /80 mm Rotary table. Recess is 55 mm Total Height excluding the jaws (Only Body) : 45 mm. The Back plate is drilled with M6 size tapped holes for the chuck's bolts to be screwed with the back plate and then provided with 2 counter drills to them clamp it with the Rotary table's T slots. The Chuck body is made of high grain casting and the jaws are made of hardened tool steel for a long life. The chuck recess is 55 mm same as that of the back plate. The back plate has a 13.9 mm small spigot that helps it in centrally locate it in the center of the Rotary Table. {Internal Refence: HM}

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