1、The lathe collet come with strong clamping force, high rigidity and low noise, very practical 2、Made after heat treatment and cold drawing hardening, the strength is relatively high, with a certain degree of flexibility and plasticity 3、Quenching processing with fine workmanship, bring sturdiness and durability, adopt inner hole grinding 4、65Mn material have high hardness greater than HRC48‑55°, with 0.005 high accuracy 5、Widely used in milling, drilling, tapping, engraving, CNC, half‑cone angle design of the spindle machine collet, which bring more clamping force 1 x Collet Item Type: ColletMaterial: 65 MnAccuracy: 0.005Hardness: > HRC48-55°Carburizing Depth: > 0.8mmSurface Roughness: > 0.8MMDiameter: Approx. 1/4mmUses: Widely used in milling, drilling, tapping, engraving, CNC, half-cone angle design of the spindle machine collet bring more clamping force