120BS30 Sprocket With 2" Finished Bore American Standard Roller Chain This 100BS23 sprocket features a

This 100BS23 sprocket features a 1-7/16" finished bore with a key-way and two set screws

This 100E21 sprocket is a durable

Sprocket Size: 100SF15

For more information on a ten groove 10C500M sheave

It is also black oxide coated which increases the sprockets overall resistance to the environment along with preventing early rust build up

120BS30 Sprocket With 2" Finished Bore American Standard Roller Chain This 100BS23 sprocket features aThis 120BS30 sprocket features a 2" finished bore with a key way and two set screws. It is a durable, high quality, and precision sprocket with 30 teeth. Something that is notable about this 120BS30 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 black oxide coated which increases resistance to the environment