1.ER Collet punch Former with Er40 collet in main bod yand other collets with size:6,8,10,12,20,25m/m 7pcs in total. The centr of collet can move gently to help the concentricity more precision

 

2.This punch grinder can be divided into 24 angles, each anle is 15 degrees at±10 seconds.

 

3.Er16 connection is special part for processing below dia. 6mm ER16 collet is dia. 1to 10mm, 4.The base can select sine vise base which is good for sine angle use