ER collets

1, the material: 65Mn

2, the accuracy AA grade within 0.01mm, A grade within 0.015mm

3, the hardness: 42-48HRC

4, Model: ER8, ER11, ER16, ER20,ER25, ER32, ER40

5, The usage: Used for drilling, boring, milling, tapping, engraving operation.

Adapted for 6499B

6. The surface: precision grinding and mirror surface.