D Murphy wrote:
I guess he found some ultra rare CNMG-411-FS inserts. I wonder if they are
the unobtanium grade.

The exact type under green plastic package is:
"CNMG120408-FS NX2525
CNMG432FS"

On top of package there are listed cutting speeds
for stainless (70-150 m/min) and steel (210-300 m/min).
So these are obviously meant for steel also.

Kristian Ukkonen.