8pc CAT40 ER16 Collet Chuck Tool Holder Set – 2.76" Length, G2.5 20000 RPM, Balanced

This is an 8-piece set of CAT40 ER16 collet chucks, balanced to G2.5 at 20,000 RPM.

Each one has a 2.76-inch processing length, made from 40CR steel.

Threads are 5/8-11.

Accuracy is tight—between 0.00012 and 0.0002 inches.

Unbranded but definitely not low-end.

It’s a custom bundle, so you get all 8 at once, ready for CNC drilling or milling.