Collet Drill Chuck Fits, 6pcs 1/1.6/2/2.4/3/3.2mm Rotary Holder,Brass Fits for Tools Electric Grinding with Fasten Black Nut

This set of collet chuck contains 1 black cap and 6 sleeves of different size for various holding needs The black cap is made from carbon steel and sleeve of high standard brass for durability and good performance This collet chuck set provides fast chucking, simply unclamp one part, switch to a new part and reclamp Collet chuck would ensures strong clamping force and holds quite securely during working under correct conditions The black cap can be conveniently tighten with hands with the exclusive skid resistance design