120BS20H Sprocket With 1-1/4" Finished Bore Single Strand Metric Roller Chain 100Q25 sprockets are bored to

100Q25 sprockets are bored to accept a Q1 type taper bushing

100B28H sprockets with a stock bore comes with the standard 1-1/4" inside diameter hole with no keyway or set screws and can be easily machine bored to custom sizes

Sprocket Size: 100BS17

Bore: 1/2"

120BS20H Sprocket With 1-1/4" Finished Bore Single Strand Metric Roller Chain 100Q25 sprockets are bored toThis 120BS20H sprocket features a 1 1 4" finished bore with a key way and two set screws. It is a durable, high quality, and precision sprocket with 20 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 120BS20H sprocket is that it fully meets all ANSI Standards, which insures proper contact between the #120 roller chain and sprocket thus preventing