1、Excellent Carbide Material: This chuck is made of excellent carbide, which has a series of excellent properties such as high hardness, wear resistance, better strength and toughness, heat resistance, erosion resistance, etc. 2、Heat Treatment And Cold Drawing Hardening: After heat treatment and cold drawing hardening of this collet, the strength is relatively high, with certain flexibility and plasticity, and the fatigue limit is comparable to that of the five color alloy spring under the same surface condition and complete hardening. 3、Wide Application: This collet is widely used in milling, boring, drilling, tapping, CNC engraving, spindle machines and other processing operations, CNC lathes, machining centers, tapping machines, drilling machines, milling machines and other equipment operations. 4、Great Performance: This Collet has high size accuracy, good grip stability and high accurate clamping force, which can improve work efficiency. 5、Female Thread: This collet is very easy to install, the collet has a female thread that allows you to tighten it into the mill.