Diameter: 22mm(Inside Bore)Overall Length: as showCoating: otherDescription:Module 1 PA20 Bore 22mm #1-8 HSS Involute Gear Milling CutterFeature: M1 HSS gear milling cutter. Specialty cutting tools designed for milling gears. 8 cutters available to suit different numbers of teeth. Sized and proportioned to afford a good cutting range and ample rigidity. Straight form tooth design to suit the involute gear form. Well suited for use in a variety of ferrous and non-ferrous materials.Specification: Module Number: 1 Material: HSS Outer Diameter: 50mm Inside Bore: 22mm Pressure Angle: 20 degree Quantity: 1pcEach of Gear is different: 1#: 12-13 Gear 2#: 14-16 Gear 3#: 17-20 Gear 4#: 21-25 Gear 5#: 26-34 Gear 6#: 34-54 Gear 7#: 55-134 Gear 8#: ≥135 GearPackage included:1 X HSS Gear Milling Cutter