1、CNC collet has strong clamping force, high rigidity and low noise, very useful 2、Come with a certain degree of flexibility and plasticity, the strength is relatively high. Made after heat treatment and cold drawing hardening 3、Inner hole grinding with fine workmanship, quenching processing bring sturdiness and durability 4、Made of good quality 65Mn material, possess high hardness greater than HRC48‑55°, and 0.005 high accuracy 5、Half‑cone angle design of the spindle machine collet, bring more clamping force. Widely used in milling, drilling, tapping, engraving, CNC 1 x Collet Item Type: ColletMaterial: 65 MnAccuracy: 0.005Hardness: > HRC48-55°Carburizing Depth: > 0.8mmSurface Roughness: > 0.8MMUses: Widely used in milling, drilling, tapping, engraving, CNC, half-cone angle design of the spindle machine collet bring more clamping force