Gearbelt Pulley, Bore Diameter 1/2 in, For Belt Series SilentSync, For Belt Width 16 mm, For Use With SilentSync Yellow Belts, Material Ductile Iron, Number of Teeth 80, Outside Diameter 202.35 mm, Pitch 8 mm, Pitch Diameter 203.72 mm, Bore Type Plain, Face Width 17 mm, Features Self-Tracking Design, For Belt Trade Size Y-80S, Keyway No, Keyway Depth Not Applicable, Keyway Width Not Applicable, Length through Bore 16 mm, Material Fabrication Machined, Maximum Operating Temperature 200 Degrees F