120R17 Sprocket (Taper Bushed) 2.9375" Finished Bore This 10C500M Sheave uses a

This 10C500M Sheave uses a M QD bushing

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This 120BTB12 sprocket is a durable

This 100B35 sprocket is a durable

Sprocket Weight: 106

120R17 Sprocket (Taper Bushed) 2.9375" Finished Bore This 10C500M Sheave uses aThis 120R17 sprocket is a durable, high quality, and precision sprocket with 17 hardened teeth that is manufactured to accept a R1 bushing. Sprockets that have hardened teeth last longer and are much more durable than those that don't. Something else that is notable about this sprocket is that it fully meets all ANSI Standards, which insures proper contact between the #120 roller chain and sprocket which prevents premature wear or breakage. This