Key, 2x6 mm

I was pleasantly surprised by how precisely the 2x6 mm dimensions match my lathe's keyway—no filing needed. Slid right in and holds firm during light cuts.

Fits perfectly into my mill's keyway slot with zero wobble. The 2x6 mm dimensions are exactly what the manual called for, and it slid right into place.

My bench setup was missing this exact 2x6 mm size and the fit in the slot is snug with no wobble during cutting. The 2 mm thickness matches the spec sheet perfectly, so it seated cleanly without any filing needed. Honestly, it's the kind of small part you don't think about until it just works.