Cutting speed and abrasion resistance compared to the TiN coating and high efficiency processing; Cutting material: Steel, alloy steel, stainless steel, copper alloy, hard work material; Smooth countering, chamfering, deburring, tip diameter: 0.1 inches (3.8 mm); Effective blade diameter: 1.0 inches (25.0 mm); Total length: 2.6 inches (67 mm); Shank diameter: 0 degree Surface treatment: TiALN coating. 3 blades. Tip angle: 90° High speed steel (HSS)