Specification Brand : Timunr BulletPoint1 : Size: Shank Size: R8, arbor diameter: 1-1/2 inch, range: 4 inch to 5 inch, drawbar thread size: 7/16-20. BulletPoint2 : Material: R8 milling machine arbor made of steel, overall fine machining. BulletPoint3 : Process: Hardened and ground for greater durability. BulletPoint4 : Advantages: Our R8 milling cutter bar is more stable when cutting, and is not easy to shake around. BulletPoint5 : Range of use: Fit for milling machine and R8 type slitting saw shaft replacement machine. ItemName : Timunr R8 1-1/2 Inch Taper Shank Sleeve Milling Cutter Shank with 7/16 Inch - 20 Drawbar Thread Pull Tail Wire R8 Face Mill Holders Fit for Milling Machine ItemPackageDimensions_Height : 8 centimeters ItemPackageDimensions_Length : 25 centimeters ItemPackageDimensions_Width : 10 centimeters ItemPackageQuantity : 1 ItemTypeKeyword : face-mill-holders Manufacturer : Timunr ModelNumber : Does not apply NumberOfItems : 1 PartNumber : TIM-1163316-384638-UNR ProductDescription : R8 1-1/2 Inch Taper Shank Sleeve Milling Cutter Shank with 7/16 Inch - 20 Drawbar Thread Pull Tail Wire R8 Face Mill Holders Fit for Milling Machine Specification: Shank: R8 Arbor diameter: 1-1/2 inch Drawbar thread size: 7/16-20 Features: 1. R8 stub milling machine arbor made of steel, overall fine machining. 2. Hardened and ground for greater durability. 3. More stable when cutting, and is not easy to shake around. Package Includes: 1x milling cutter bar