Item Type: Back Pull Collet_x000D_ Material: 65 Mn_x000D_ Accuracy: 0.005_x000D_ Hardness:> HRC48-55_x000D_ Carburizing Depth: >0.8mm/0.31in_x000D_ Surface Roughness: >0.8mm/0.31in_x000D_ Diameter: Approx. 2mm/0.08in_x000D_ Use: Widely used for milling, drilling, tapping, engraving, CNC, half cone angle of spindle machine collet, with great clamping force 1After heat treatment and cold drawing hardening, the strength is relatively high, with a certain degree of flexibility. 2Quenching processing, fine workmanship, sturdiness and durability, inner hole grinding. 3Manufactured with strong clamping power, high rigidity, low noise, very good choice for you. 4Widely used for milling, drilling, tapping, engraving, CNC, half cone angle of spindle machine collet. 5High performance and high quality, the carburizing depth is above 0.8mm, practical in use.1 xBack Pull Collet