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08B17H sprockets with a stock bore comes with the standard 12 millimeter inside diameter hole with no key-way or set screws and can be easily machine bored to custom sizes
100B39 sprockets with a stock bore come with the standard 1-1/4" inside diameter hole with no keyway or setscrews and can be easily machine bored to custom sizes
This 100BS20 sprocket features a 2-3/16" finished bore with a key-way and two set screws
875mm pitch 10B chain and conforms to ISO and DIN dimensional standards for direct interchangeability
100SDS12 Sprocket (QD Type) 31-Tooth Sprocket 08B17H sprockets with a stockThis 100SDS12 sprocket is a durable, high quality, and precision sprocket with 12 hardened teeth that is manufactured to accept a SDS bushing. Sprockets that have hardened teeth last longer, perform better, 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 #100 roller chain and sprocket. Meeting strict ANSI Standards
