Miter Gear Bore Diameter 16 mm Bore Diameter Tolerance H7 Bore Type Finished Face Width 15 mm For Shaft Angle 90 Degrees Gear Shape BK Hub Diameter 55 mm Hub Projection 15 mm Hub Type Hub with Set Screws Includes Set Screw Keyway Yes Keyway Depth 2.3 mm Keyway Width 5 mm Material Stainless Steel Material Grade SUS303 Maximum Teeth Hardness 187 HB Metric Module Pitch 2.5