Spur Gear Metric Module Pitch 0.8 Bore Diameter 6 mm Bore Type Plain Hub Type Hub with Set Screws Hub Diameter 28 mm Hub Projection 8 mm Face Width 8 mm Pitch Diameter 32 mm Finish Black Oxide Material Carbon Steel Pressure Angle 20 Degrees Bore Diameter Tolerance H7 Gear Shape S1T Includes Set Screw