Collet Chuck, ER-32, R8

Wasn't sure how much runout I'd get at this price, but dialing in an end mill showed barely any wobble. The 7/16"-20 drawbar thread matched my mini mill's stock drawbar perfectly, no mods needed. Tool steel feels solid and the R8 taper seated cleanly on the first try.

Swapped out my old end mill holder for this and the R8 taper seated perfectly in my mini mill spindle with zero runout I could feel. The tool steel body has a nice heft to it, and ER-32 gives me way more flexibility for holding different sized bits.

The 7/16"-20 drawbar thread matched my mini mill's stock drawbar perfectly, no adapter needed. Runout on the R8 taper is tight enough that my end mills cut noticeably smoother than with the old holder. Tool steel feels solid, not like the cheap imports I've handled.