Hub Gear Sprockets Identification Guide

Sturmey Archer C50 / RX hub Sprocket
 
Sturmey Archer 8 Speed Sprocket
 
Rohloff Spline Sprocket
(Reversible design used on newer hubs)
Rohloff Threaded Sprocket
(Used on Old style threaded Rohloff hubs)
 
Sturmey Archer/ Shimano Alfine/ Nexus/ SRAM Sprocket
(3 Notch, 35mm ID fits most Shimano Nexus/ Alfine hubs)
 
Shimano HyperGlide Sprocket- Used on Brompton BWR hub