Allied Machine and Engineering - 3/8" Diam Flat Bottom Seat Size Y Spade Drill Insert

Solid carbide provides better rigidity than high speed steel. It is extremely heat resistant and used for high speed applications on cast iron, non ferrous materials, plastics, and other tough-to-machine materials.

Titanium nitride (TiN) is a multi-purpose coating which increases chip flow in softer materials. The heat and hardness-resistance allows the tool to run at higher speeds than uncoated tools.