Ergon GP3 Performance Comfort Grips Increased Grip and Control The Ergon GP-3 now has a re-engineered three-finger bar end. It delivers increased grip and control due to the rubberized anti-slip lower texture, and better ergonomics. The bar end and the grip body can be adjusted independently, allowing you to fine-tune the angles for maximum comfort and individual needs. The clamp is also carbon bar compatible. Because Ergon realizes that not all hands are created equal and that riders have a preference, the Ergon GP3 comes in two different sizes. Ergon GP3 Performance Comfort Grips Features Material: UV Resistant Composite with rubber inserts Use: Mountain bike, touring, commuting Small: 92mm cross section for hands measuring 6. 5-8. 5Large: 102mm cross section for hands measuring 8. 5-10. 5Clamp: Carbon Compatible, Installation Friendly | Ergon | Gp3 Performance Comfort Grips Large | Rubber