Item Type: Collet Chuck Holder Material: 65 Mn Accuracy: 0.005 Hardness:> HRC48-55 Carburizing Depth: >0.8mm Surface Roughness: >0.8MM Diameter: Approx. 10mm / 0.4in Uses: Widely Used For Milling, Drilling, Tapping, Engraving, CNC, The Half-Cone Angle Design Of The Spindle Machine Collet 4, With More Clamping Force Package List 1 x Collet Chuck Holder 1After heat treatment and cold drawing hardening, the strength is high with certain flexibility and plasticity. 2The collet chuck holder possesses strong clamping force, high rigidity and low noise. 3Quenching processing and fine workmanship make the product strong and durable. 4Widely used for milling, drilling, tapping, engraving, CNC, the halfcone angle design of the spindle machine collet 4, with more clamping force. 5Good contact performance can ensure the stable working for the collet chuck holder.