Shimano Nexus SL-3S41E 3-Speed Revo Shifter Internally Geared Hub - The Shimano Nexus SL-3S41E shifter for internally geared hubs features Shimano's Revoshift technology for easy shifting action.Compatible with Shimano Nexus Inter3 hubsRevoshift offers a low-effort rotational shift action that doesn't depend on finger strength and allows riders to keep their hands on the handlebar while shiftingThe lever also includes an optical gear display, which shows riders what gear position is selected while riding