Synchronous Pulley; 20MM Belt Width; 8MM Belt Pitch; 8M-20 Belt Style; 22 Teeth; 28.702MM Face Width; Rough Bore; 66.192MM Flange OD; 54.661MM OD; 56.032MM Pitch Diameter; No Keyway; No Bushing; Yes Minimum Plain Bore; 1.188" Max Bore