The Profile Design 43 ASC Extensions help you stay in your most aerodynamic and comfortable position so you can keep up the pace for miles on end. They are made entirely of carbon fiber, shaping them into the most aero position possible as well as lightweight and stiff. The grip angle is set at 43 degrees which keeps the wrists in a neutral position for relaxed speed. This increases your contact area and helps air flow naturally over your arms. CFD optimized the shape to minimize drag without reducing strength. Compatible with any aerobar that is designed for 22.2mm, they are the perfect choice for any rider who wants to improve the comfort of their aero setup.