You searched for "triangular insert"
Pramet
Pramet 90° Face Mill 63mm, Diameter, 4, Pieces
Part: 63A04R-S90LN12-C
Large face mill with replaceable inserts for surface milling operations.
Pramet
Pramet 19° Face Mill 63mm, Diameter, 5, Pieces
Part: 63A05R-S19PD09-C
Medium 63mm face mill with replaceable inserts for efficient milling work.