Black Inc AB02 Aero Gravel Barstem 90mm Handlebar The Black Inc AB02 Aero Gravel Barstem Handlebar redefines the riding experience with its integrated, aerodynamic and ergonomic design, made for the modern cyclist. Width: 420mm Material: Carbon Fiber Handlebar type: Aero Gravel with barstem integration Compatibility: Internal and external wiring for electronic systems and disc brakes Weight: 320g for the size 420mm x 110mm Ergonomics: Designed to reduce fatigue with optimized grips and support zones Special features: Cabling integration, matte and glossy UD finish, 3º flare in the drop section, 2º backsweep in the upper section