Review on Straight Assembled Milling Machines Cutting Tools - Utoolmart Milling Accessories by David Blackstock

I bought a 1 1/8" end mill (from elsewhere) to drill a hole in a stainless steel bar. It worked great. I bought this 22mm end mill to cut a similar hole to drill in the same shank.I used the correct lubrication and speed but this end mill didn't even scratch the shank.It just rolled up the edges of the end mill and turned blue.Just as a test, after the end mill was smoked I laid it down into my lathe and cut the shank. It cut like butter. It was like the end mill hadn't been hardened at all. It's advertised as being able to cut steel, titanium, tool steel, etc. It can cut aluminum but that's about it already.