1、Cemented Carbide: Our milling collet chuck is made of excellent cemented carbide with high strength, good flexibility and plasticity after heat treatment and cold drawing hardening. 2、Wear and Heat Resistant: Collet chuck is high hardness, wear and heat resistant, corrosion resistant, strong and durable. 3、Good Fatigue Limit: Milling collet chuck has good fatigue limit with the same surface condition and fully hardened condition. 4、Light Weight: Our milling machine collet chuck is light weight, very easy to install and carry, good replacement parts for old and broken parts. 5、Widely Used: CNC collet chuck for engraving machine is widely used in milling, boring, drilling, tapping, CNC engraving, spindle machine and other processing operations, CNC lathe, machining center, tapping machine, drilling machine, milling machine and other equipment operations.