THOM RD CARBON DROP BAR 31.8x40 BLACKRoad racing handlebar featuring a mild wing shape on top, clamping area wide enough for aero bars, and mid compact reach and drop Thomson`s road and cyclocross bars are light, strong, and built to accept aero bars or cross brake levers Layup uses 3 different fiber types with different tensile strengths and tensile modulus, including High Strength carbon fiber. This helps allocate stiffness and flex where needed All carbon fiber is produced by Toray