40BS45 High-Performance Sprocket 1-1/4" #41 Roller Chain Sprockets This 100BS11 sprocket features a

This 100BS11 sprocket features a 2" finished bore with a key-way and two set screws

This 100BTB32 sprocket is a durable

Dimension (F) Maximum: 2"

140B32 sprockets with a stock bore come with the standard 1-1/2" inside diameter hole with no keyway or setscrews and can be easily machine bored to custom sizes

40BS13 5/8" Finished Bore Sprocket Dimensions:

40BS45 High-Performance Sprocket 1-1/4" #41 Roller Chain Sprockets This 100BS11 sprocket features aThis 40BS45 sprocket features a 1 1 4" 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 #40 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