0.937" Pitch, 1/4" Bore, 1/2" Hub, 14-1/2D Pressure, Bronze Alloy, 60-Teeth, Precision, Right Hand, Single Thread, Worm Gear Worm Gear Item Worm Gear Type Precision, Right Hand, Single Thread Material QQ-B-637 464 Bronze Alloy Pitch Diameter 0.937 Bore...