Outer diameter: 0.2 inches (6.0 mm); Inner diameter: 0.1 inches (3.0 mm); Total length: 2.8 inches (70 mm); Shank diameter: 0.2 inches (6 mm); Blade number: 3 blades; 3 blades; Guide removal; Right twist; Cutter outer diameter tolerance: 0 - +0.2; Inner diameter: e8; Material/finish: SKH51; Country of origin: Japan; Cord number: SKH57