Outer diameter: 0.5 inches (13.0 mm); Inner diameter: 0.3 inches (8.3 mm); Total length: 3.5 inches (90 mm); Shank diameter: 0.5 inches (12 mm); Blade number: 3 blades; 3 blades; Guide removal; Right twist; Cutter outer diameter tolerance: 0 - + 0.2; Nominal inner diameter: e8; Material: SKH51; Country of origin: Japan