Features 1、Designed to fit milling machines, drilling and milling machines and multipurpose machines with R8 spindle. 2、With high accuracy, accuracy is up to 0.0006" TIR 3、Suitable for all kinds of milling machine spindle taper hole for the R8 4、It is used for clamping tools,change the taper hole of spindle 5、It is easy to use,to enlarge the use range of machine tool Specification Features: Designed to fit milling machines, drilling and milling machines and multipurpose machines with R8 spindle. With high accuracy, accuracy is up to 0.0006" TIR Suitable for all kinds of milling machine spindle taper hole for the R8 It is used for clamping tools,change the taper hole of spindle It is easy to use,to enlarge the use range of machine tool Made of premium steel material, with high hardness, durable in use Specification: Accuracy: 0.0006" Outer diameter: 24 mm Inside diameter: 12.4 mm Scope of application: milling machine R8 1/8 1pcs R8 3/16 1pcs R8 1/4 1pcs R8 5/16 1pcs R8 3/8 1pcs R8 5/8 1pcs R8 1/2 1pcs R8 9/16 1pcs R8 7/16 1pcs R8 11/16 1pcs R8 3/4 1pcs Package list: 1 x R8 Collet Package List