120B13 Sprocket With Stock Bore Shaft Mount Reducer Accessories This 10C500M Sheave uses a

This 10C500M Sheave uses a M QD bushing

This 100BTB30 sprocket is a durable

This 120B9 sprocket is a durable

Sprocket Size: 120BS21

Overall Width (W): 58

120B13 Sprocket With Stock Bore Shaft Mount Reducer Accessories This 10C500M Sheave uses aThis 120B13 sprocket is a durable, high quality, and precision sprocket with 13 hardened teeth. Sprockets that have hardened teeth last longer and are much more durable than those that don't. Something else that is notable about this 120B13 sprocket is that it fully meets all ANSI Standards, which insures proper contact between the #120 roller chain and sprocket thus preventing premature wear or breakage. This sprocket is also fully black oxide coated