50BS72 Sprocket With 1-7/16" Finished Bore 43-Tooth Sprocket This 100BS23 sprocket features a

This 100BS23 sprocket features a 2" finished bore with a key-way and two set screws

Bearing Size: 6013-2RS

Pulley Size: 2BK80

40B80 sprockets with a stock bore comes with the standard 3/4" inside diameter hole with no keyway or setscrews and can be easily machine bored to custom sizes

50BS72 Sprocket With 1-7/16" Finished Bore 43-Tooth Sprocket This 100BS23 sprocket features aThis 50BS72 sprocket features a 1 7 16" finished bore including a key way and two setscrews. It is a durable, high quality, and precision sprocket that fully meets all ANSI Standards which insures proper contact between the #50 roller chain and sprocket thus preventing premature wear or breakage. This sprocket is also black oxide coated which increases resistance to the environment and will prevent early rust build up. We also offer stock bore