50BS31 Sprocket With 1-1/2" Finished Bore 120B24 Sprockets This 120BS23 sprocket features a

This 120BS23 sprocket features a 2" finished bore with a key-way and two set screws

50BB13H Idler Sprocket X 5/8" Dimensions

Size: 3TB54

40A35 sprockets with a stock bore comes with a 19/32" inside diameter plain hole and can be easily machine bored to custom sizes

50BS31 Sprocket With 1-1/2" Finished Bore 120B24 Sprockets This 120BS23 sprocket features aThis 50BS31 sprocket features a 1 1 2" 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