Spur Gear Metric Module Pitch 0.8 Bore Diameter 6 mm Bore Type Plain Hub Diameter 14.5 mm Hub Projection 6 mm Face Width 4 mm Pitch Diameter 40 mm Material Duracon Pressure Angle 20 Degrees Bore Diameter Tolerance -0.05 to -0.3 mm Gear Construction Webbed Gear Shape S9