C25-ER20-50L Collet Block Round Collet Holder 6 mm / 8 mm / 10 mm / 12 mm / 16 mm for CNC Rotary Spindle Motor mping Rod (12 mm)

Steel material: the motor tool bar is made of high-quality steel material with high hardness, stable structure and longer service life. Precision processing: the whole thing uses the technology of quenching and hardening, precision machining inside and outside as well as the high concentricity. Multi-size shaft holes: the high-quality ER20 clamping block is mainly used for clamping the motor shaft of the spindle. The chucks with different openings can tension motor shafts of different thicknesses. Easy clamping: the collet chuck has a smooth that can be easily clamped without scratches and with stable performance. Application: wide range of applications and easy clamping. Suitable for lathes, drills, milling machines, drills, taps, drills, milling cutters, etc.