أداة قطع، أداة خراطة كروية ونصف قطرية كبيرة، كربيد

I needed something that could handle stainless steel without chattering, and this carbide bit cuts clean arcs even at higher feeds. The 1/4" diameter is a precise fit for my holder, and it held an edge through a dozen radius cuts so far.

Finally got this to replace the worn bit on my radius tool, and the 1/4" carbide cuts through stainless steel like butter. It's noticeably stiffer than the HSS ones I've used before.

The solid carbide holds up great on stainless steel, and the 1/4" diameter gives me the control I need for smooth radius cuts. It’s exactly the size I expected, and it’s already paid for itself in one session.