These Ritchey WCS Python Trail Grips feature a patented helical core design with a spiral inner grip surface to provide optimal grip in demanding conditions. Tripple density Kraton rubber offers reliable support, while an integrated lock ring ensures a secure fit on your handlebars. Upgrade your bike for better handling and control in rough terrain. The Inside Line:Ergonomically shaped grip that is soft yet supportive, a great solution for the endurance riders with long days in the saddle to combat hand fatigue Features: Length: 144 mm Ergonomically shaped triple density Kraton rubber Fastens with a single integrated lock ring Patented Python self-tightening helical core design constricts around the bar the instant that the grip starts to twist Materials: Clamp: 7075 Aluminum Tripple density Kraton rubber