ER11 ER16 ER20 ER25 ER32 ER spring collet chuck Accuracy 0.005mm for CNC milling tool Engraving machine spindle motor

1 pcs CNC ER11 ER16 ER20 ER25 ER32 ER spring collet chuck Accuracy 0.005

mm  for CNC milling tool Engraving machine spindle motor 

Clamping force, high accuracy, good stability and grip.

Can be used for holding drills, boring tools, chisel, reamers and other tools.

Material: spring steel ( good quality )