Precision BT Collet Chuck for ER Collets. Balanced for 23,000 RPM. Precision Hardened and ground to exacting standards.

AT3  Fit and Finish or better. Collet chucks are supplied with clamping nuts. Wrenches must be purchased separately.

Retention Knobs are sold separately. Precision Manufacturing, made from high grade steel, hardened and ground with 100% quality inspection.