Developed in the Specialized wind tunnel the S-Works Aerofly saves ~17 seconds over a 40km distance versus a traditional shallow bend road bar. This time saving comes from the distinct aero shape reduced tape on the tops & full internal cable routing.FACT carbon construction delivers a light weight stiff & aerodynamic design.UCI legal compatible with Shimano SRAM & Campagnolo controls. Optimized for internal brake & shifter cables; electronic compatible. Finish: Unidirectional gloss carbon Weight: 250g (42cm) Clamp Diameter: Oversized 31.8mm Bar Width (centre-to-centre): 40/42/44cm Bend: 130mm drop x 80mm reach