Keenso Collet Chuck, Collects Mini Drill Black Cap M8 X 0.75mm Size Power Tool Brass and Carbon Steel Meterial Manually Tighten Chuck for Rotary Tools

【Diverse Size to Choose】This set of collet chuck has 1 black cap and 6 sleeves, all of them are different size : collet sleeves size are: 1mm, 1.6mm, 2mm, 2.4mm, 3.2mm, 3mm; black cap size is M8 X 0.75mm, It can satisify various holding needs 【High Quality】M8 X 0.75mm Black Cap is made from carbon steel and sleeve of high standard brass. It could keep good condition on heavy clamping force , holds quite securely while working under correct conditions 【Easy Operation】The black cap can be conveniently tighten with hands with the exclusive skid resistance design. Collet chuck set provides fast chucking, simply unclamp one part, switch to a new part and reclamp 【Work Principle】Collet chuck forms a collar around an object to be held and exerts a strong clamping force on the object when it is tightened. The collet can be squeezed such that its inner contracts to a slightly smaller diameter, squeezing the tool whose secure holding is desired 【Work Principle】Collet chuck forms a collar around an object to be held and exerts a strong clamping force on the object when it is tightened. The collet can be squeezed such that its inner contracts to a slightly smaller diameter, squeezing the tool whose secure holding is desired