Roller Chain Sprocket; 5/8" Bore; 40 Chain; 21 Teeth; 1 Row of Teeth; No Hardened Teeth; 3.618" Outside Diameter; 3.355" Pitch Diameter; B-Hub One Side; Finished Bore Mount; No Bushing; 1/2" Chain Pitch; ANSI Roller Chain; Keyway; Steel Material

Roller Chain Sprocket; 40 Chain; 21 Teeth; 1 Row of Teeth; No Hardened Teeth; 3.618" Outside Diameter; 3.355" Pitch Diameter; B-Hub One Side; Bushed Mount; 1610 Bushing; 1/2" Chain Pitch; ANSI Roller Chain; Keyway; Steel Material

Roller Chain Sprocket; 40 Chain; 21 Teeth; 1 Row of Teeth; No Hardened Teeth; 3.618" Outside Diameter; 3.355" Pitch Diameter; B-Hub One Side; Rough Bore Mount; No Bushing; 1/2" Chain Pitch; ANSI Roller Chain; No Keyway; Steel Material

Synchronous Pulley; 3/8" Belt Width; 1/5 Inch Belt Pitch; XL Belt Style; 21 Teeth; 0.43" Face Width; Rough Bore; 1.566" Flange OD; 1.317" Outside Diameter; 1.337" Pitch Diameter; No Keyway; No Bushing; Yes Minimum Plain Bore; 11/16"

Roller Chain Sprocket; 40 Chain; 21 Teeth; 1 Row of Teeth; Hardened Teeth; 3.618" Outside Diameter; 3.355" Pitch Diameter; B-Hub One Side; Bushed Mount; H Bushing; 1/2" Chain Pitch; ANSI Roller Chain; Keyway; Steel Material