Cobra carbide turning inserts used on a wide range of materials triangle with chipbreaker and for turning and finishing on a wide range of materials. Screw-on style insert. Single sided for semi-finishing and finishing. 7 Degrees relief angle. Multi layer coating TiN/TiC/TiCN/TiN for turning and milling carbon and alloy steels, tools steel and stainless steel. Provides longer tool life than uncoated grades Solid carbide tools offer long tool life and faster cutting speeds than other substrates, but are more brittle and must be used with rigid toolholding systems.