MATERIAL- 40Cr Steel, This ER16 Spring Collet set made from 40Cr steel and fully hardened, has high quality performance ,quite sturdy for your long-lasting use.
FEATURE- Go through hardened and precision ground,built in self-Release design and tools will never get stuck in holder.
APPLICATIONS- Can be widely used in milling, boring, drilling, tapping, engraving, spindle machines, etc.