23Pcs R8 Collet Set 1/16 -3/4 Threaded Internally 7/16 -20 Mill Chuck Holder High Accuracy Round Spring Collet for Mill Machine SpecificationMaterial: steelRange: 1/16 -3/4 ER8 collet set (1/16 3/32 1/8 5/32 3/16 7/32 1/4 9/32 5/16 11/32 3/8 13/32 7/16 15/32 1/2 17/32 9/16 19/32 5/8 21/32 11/16 23/32 3/4 ).Drawbar thread: 7/16 -20Accuracy: Run-out tolerance 0.015mm/0.0006 .Feature Reliable quality: This collet chuck set is made of quality steel and has been quenched with fine workmanship, durable and sturdy. Power clamping, the clamping force of the mill collets set is strong.High Accuracy: 0006 TIR. This collet set is hardened and accuracy ground, smooth surface, small resistance, high accuracy, small runout tolerance, guarantees the accuracy of the collet operation.Wide application: This 1/16 -3/4 R8 round chuck spring collet set is suitable for various milling machines and milling lathe tools with R8 taper holes, can be used to clamp the tool, change the taper hole of the spindle, expand the use of the machine.Package Included 23Pcs R8 accuracy round spring collet set as the picture shown. steel Range: 1/16 to 3/4 inch ER8 collet set (1/16 3/32 1/8 5/32 3/16 7/32 1/4 9/32 5/16 11/32 3/8 13/32 7/16 15/32 1/2 17/32 9/16 19/32 5/8 21/32 11/16 23/32 3/4 ). Various models meet your needs. Drawbar thread: 7/16-20 UNF internal thread on the top side, pull up into the keyed taper squeezing the end mill to grip it. Reliable quality: This collet chuck set is made of quality steel and has been quenched with fine workmanship, durable and sturdy. Power clamping, the clamping force of the mill collets set is strong. High Accuracy: 0006 TIR. This collet set is hardened and accuracy ground, smooth surface, small resistance, high accuracy, small runout tolerance, guarantees the accuracy of the collet operation. Wide application: This 1/16-3/4 R8 round chuck spring collet set is suitable for various milling machines and milling lathe tools with R8 taper holes, can be used to clamp the tool, change the taper hole of the spindle, expand the use of the machine. Capacity 0.75 Inches Lock Type Manual Brand Name Timunr Unit Count 1.0 Count Handle Type keyed Item Weight 7040 Grams Thread Size 7/16-20 Manufacturer Timunr Model Number Does not apply Item Diameter 0.75 Inches Material Type Alloy Steel Compatible Devices Milling Machine Included Components 23Pcs R8 Collet Set Manufacturer Part Number TIM-1370236-874935-UNR