Worm Wheel Bore Diameter 12 mm Bore Diameter Tolerance +/- 0.2 mm Bore Type Plain Face Width 14 mm Gear Shape H1 Hub Diameter 40 mm Hub Projection 10 mm Material Bronze Metric Module Pitch 1.5 Number of Starts 1 Number of Teeth 50 Outside Diameter 79.5 mm Overall Length 24 mm