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the 10B SA2 attachment has a straight tab on one side with two holes for mounting
Tooth Count: 31
Pitch Diameter: 161
100BTB21 sprockets are manufactured to accept a 2517 size taper bushing which we also stock with a wide range of bore sizes
perform better
120A27 Sprocket #120 J Type Sprockets the 10B SA2 attachment hasThis 120A27 sprocket is a durable, high quality, and precision A Plate sprocket with 27 teeth that is manufactured out of high quality steel. 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 thus preventing premature wear or breakage. This sprocket is also evenly coated with black oxide, which adds resistance to to the environment and
