SprocketsWith a 6-bolt hole pattern, just like disc rotors, so you can attach them to hubs with disc rotor mounts for fixed-gear use.

Can also be used with a  Casettte Cog Carrier (available separately) which is Shimano-splined, and sandwiches a spline-less sprocket. This gives you a wide profile that won't damage your freehub

• Fits standard 6-bolt disc mount - 3/32" chain