Shimano Nexus SL-C6001 8-Speed RevoShift Shifter - Optical Gear Display For use Nexus Inter-8 Internally Geared Hub BLKShimano Nexus SL 6001 8 Speed Revo Shifter For use with Nexus Inter 8 Internally Geared Hub Black. The Shimano Nexus SL C6001 RevoShift shifter for Inter 8 8 speed Internally geared hubs makes it easy to see your gear works smoothly with Shimano hydraulic disc brakes for better control and provides consistent long lasting performance. Offers easier viewing of the gear number indicator Enhanced finger access compatibility with Shimano hydraulic disc