Techniks1/4" Super Precision ER20 Collet .0002 Accuracy Chuck Mill

Just feels great! Bit fits snug before even turning the nut. A single turn to remove the bit.

The dispenser in installed at the kitchen sink with detergent bottle in cabinet below. No problems

I got these so that I could use imperial bits in my CNC. The spindle that I had came with Metric Collets. These have worked out just perfect.

For use on a CNC machine

I've been using Er-20 collets on my CNC spindle for a few years. Like them very much.

For perfectly and works great

As it moved loose in the nut the bit came off-center and broke the bit ruining the carving. Poor quality