CLAMP DOWNThumb Over Grip System (TOGS) creates an additional hand position for climbing or cruising while still being able to access brake levers and shifters. FEATURESUniversal fit inside and above grips, including lock-on clampsHinged Clamp allows installation without removal of grips. Tighten bolt to less than 1 Nm40% Carbon fiber, Stainless hardware 18g