Shimano Sprocket for Nexus and Alfine internal gear hubs 3 to 11-speed

Shimano SM-GEAR sprocket for use in Nexus and Alfine internally geared hubsThe Shimano SM-GEAR sprocket can be used for Nexus and Alfine internally geared hubs with 3 to 11 gears. They are made of steel and are 2.3 mm thick. The sprockets are available fro