round over tool for Alu.

I was once shown a tool on here for rounding corners of aluminium.

it looked like a round over bit but I can't find it anywhere!

1Pcs Hss Corner Rounding Cutter End Mill Choose Size From R1 To R12.5 | eBay

Cutwel tools sell them, not cheap but high quality and quick service.

Form Cutting Tools | Cutwel Limited

ARC has started doing them.

Corner Rounding End Mills - Arc Euro Trade