TiAlN Coated, Center cutting, M42-8% Premium cobalt, Flutes ground by a world-class IS-9002 Factory, CNC QualifiedDiameter: 3/4''; Shank Diameter: 3/4''; Flute length: 1-5/8''; Overall Length: 3-3/4''; 4 Flute, Coarse ToothProduces a smooth finish that often eliminates the need for a finishing cut for profiling and shallow slots.Used for aggressive machining. Performance approaching solid carbide with tough H.S.S Tools. Recommended for abrasive materials.Excellent performance in hard materials that are difficult to cut. Extremely hard, wear resistant.