Key, 4x8 mm

The 4x8 mm key fit perfectly into my mini lathe's spindle slot—no filing needed. It feels sturdy enough to handle the torsion spring torque without any wobble. Setup was quick and straightforward.

I was a little worried about the size at first, but this 4x8 mm key is a perfect precision fit for the mini lathe's torsion spring mechanism. Made my repair job quick and hassle-free.

Exactly the right size for the mini lathe spindle and intermediate shaft, and it fit without any filing or adjustment. The torsion spring mechanism on my mini mill works smoothly now that I swapped in this key.