Uxsiya 6pcs Collet Chuck Sleeves Grasp Capacity Range 1mm 3.2mm with M8*0.75 Cap Fits Rotary Tools, 1 Black and 6 of Different Size

[Collet Chuck Sleeves] :This is a set of collet chuck that forms a collar around an object to be held and exerts a strong clamping force on the object when it is tightened . [Collet Can Be Squeezed] :The collet can be squeezed such that its inner contracts to a slightly smaller diameter ,squeezing the tool whose secure holding is desired . [Fast Chucking] :This collet chuck set provides fast chucking ,simply unclamp one part ,switch to a new part and reclamp .Bringing more convenience to your life . [Strong Clamping Force] :Collet chuck would ensures strong clamping force and holds quite securely during working under correct conditions . [ Materials] :The black cap is made from carbon steel and sleeve of high standard brass for durability and good performance .The black cap can be conveniently tighten with hands with the exclusive skid resistance design .