40BS21 Sprocket With 1" Finished Bore American Standard Roller Chain This 6801-2RS ball bearing is

This 6801-2RS ball bearing is a high-precision premium quality sealed deep groove 12x21x5 ball bearing made to ABEC 3 precision standards from AXIS

Part #: UCHA212-36

This 160A26 sprocket is a durable

40A12 sprockets with a stock bore comes with a 1/2" inside diameter plain hole and can be easily machine bored to custom sizes

40BS21 Sprocket With 1" Finished Bore American Standard Roller Chain This 6801-2RS ball bearing isThis 40BS21 sprocket featured a 1" finished bore with a key way and two set screws. It is a durable, high quality, and precision sprocket with 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 sprocket is that it fully meets all ANSI Standards, which insures proper contact between the #40 roller chain and sprocket thus preventing premature wear or