Sandvik Coromant 2-DCMT 3(2.5)2-PM 1515 CoroTurn 107 Carbide Turning Insert, DCMT, 55 Degree Diamond, PM Chipbreaker, GC1515 Grade, Multi-Layer Coating, DCMT 3(2.5)2-PM, 3/8" iC, 0.0315" Corner Radius (Pack of 2) Solid carbide tools offer long tool life and faster cutting speeds than other substrates, but are more brittle and must be used with rigid tool holding systems Inserts turning, CoroTurn 107/111 T-Max U, Pos, Single-Sided Positive Basic shape 7 degree Indexable-turning external and internal