The GC1 is a grip developed for the ergonomic demands of users of bicycles with backwards-swept handlebars, such as those found on city bikes. Using tradition grips on these bikes causes a kink in the wrist. The GC1 corrects this wrist position through its anatomic and ergonomically correct form. Any aches and tension can therefore be reduced. The GC1 is made from German developed, certified toxin free and UV stable rubber compounds. Specially positioned textures and different compound hardness ensure maximum comfort, and a secure grip.Size: One Size.Material: Forged Aluminium Clamp.Specifications s of the different models: - Regular / Trigger Shifters : Both Grips are long (bot are the same length). - Gripshift® / Dual Twist Shift ers: Both Grips are shortened . - Rohloff® / Nexus® / XX1® / Single Twist Shift ers: Right Grip is shortened and Left Grip is long.