The original ergonomic Ergon GRP1 ROHLOFF/NEXUS set world-wide standard in the ergonomy, comfort, material and quality. The grips prevent your hands from getting desensitized, from finger ache and arm fatigue. Special certified material developed in Germany promises premium quality. Aluminium ends keep the grips in place and prevents in from moving around, while allowing perfect angle adjustment. The grips are also compatible with carbon handles.