.009 Square End Mill – 2 Flute

Needed a 0.23mm tip for slotting thin aluminum and this thing holds tolerance way better than the HSS bits I was burning through. The 1/8" shank fits my trim router collet perfectly, no adapter needed.

I picked this up for cutting small pockets in aluminum and the flat square tip leaves a really clean floor finish. The 1/8" shank fits my standard collet with no runout issues, and it's held an edge through a decent amount of work.

That .009" tip is tiny but it held up fine milling pockets in brass without snapping. The 1/8" shank fits my standard collet, so no adapter needed. Flat bottom came out clean enough that I barely had to deburr.