It is durable and does not allow secondary burrs to be performed efficiently, so it can be used for both mechanical and manual operation; Cutting material: Steel, alloy steel, stainless steel, copper alloy, aluminum alloy; Tip diameter: 0.1 inches (2.8 mm); Effective blade diameter: 0.5 inches (12.4 mm); Total length: 2.2 inches (56 mm); Shank diameter: 0.3 inches (8 mm). Cutter tip angle: 3 inches (8 mm). 0° Non-coated High Speed Steel (HSS)