120B25 Sprocket With Stock Bore Coupling Roller Chain This 100E25 sprocket is a

This 100E25 sprocket is a durable

Outside Diameter: 19

100A17 Sprocket Dimensions

Sprocket Size: 120R25

Outside Diameter: 39

120B25 Sprocket With Stock Bore Coupling Roller Chain This 100E25 sprocket is aThis 120B25 sprocket is a durable, high quality, and precision sprocket with 25 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 120B25 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