TECHNIKS ER20 Precision Collet 5/16″ – 0.0002 T.I.R., SYIC 04220-5/16

For the CNC machinists who don’t mess around—here’s the TECHNIKS ER20 collet at 5/16″ (0.312).

It’s precision-ground, T.I.R.

rated at .0002, and built for tight tolerances.

Brand new, still in its original packaging.

Perfect for workholding in mills or lathes.

MPN is 04220-5/16, so you know exactly what you're getting.

Nothing fancy, just a solid collet that runs true.

No UPC, just pure machining performance.

If you run ER20 tooling, this one’s a keeper.