ER20 Collet Chuck Set,13Pcs Precision Spring Collet Set for CNC Engraving Machine Milling Tool Holder …

I bought these to use with my cnc shark.

These seem to be very good quality.Two things with my set did not match the description & pictures though. #1. My set contained a 10.5 mm collet instead of a 10 mm. #2. My collets don't have the sizes labeled on them like the ones pictures.Overall it was a good deal.

Good Quality