Package include:
1pc of collet chuck holder.
ER11 collet clamping range: 1-7 mm. ER16 collet clamping range: 1-10 mm. ER20 collet clamping range: 1-13 mm. ER25 collet clamping range: 1-16 mm. ER32 collet clamping range: 1-20 mm. ER40 collet clamping range: 3-26 mm.