TOOGOO(R) 10mm Head Diameter Cylindrical Tungsten Carbide Rotary Burr Suitable for deburring and polishing metal / nonmetal materials up to HRC70 hardness Shape: Cylindrical (round head) Burr Head: Approx. 10mm diameter, 20mm long Shank Diameter: Approx. 6 mm Shank Length: Approx. 36 mm