Features:
Made of highest grade steel available.
Precision ground to close tolerance.
Hardened and ground throughout.
Suitable for all kinds of milling machine spindle taper hole for the R8.
It used for clamping tools,change the taper hole of spindle,It is easy to use,to enlarge the use range of machine tool.

Specifications:

material:65MN Steel
Hardness :HRC 55-60
Precision:Drawbar Thread internally : 7/16"-20
The clamping hole diameter:
001:3mm
002:4mm
003:5mm
004:6mm
005:8mm
006:10mm
007:12mm
008:14mm
009:16mm
010:18mm
011:20mm

Package Included:

1 x R8 Metric Round Collet