100B12 Sprocket With Stock Bore 1.25" Finished Bore features a solid roller design

features a solid roller design for increased performance

Pitch Diameter: 69

This 100BTB17 sprocket is a durable

This 100A37 sprocket is a durable

ease of use

100B12 Sprocket With Stock Bore 1.25" Finished Bore features a solid roller designThis 100B12 sprocket is a durable, high quality, and precision sprocket with 12 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 100B12 sprocket is that it fully meets all ANSI Standards, which insures proper contact between the #100 roller chain and sprocket thus preventing premature wear or breakage. This sprocket is also fully black oxide coated