Vision Metron 4D Di2 Carbon HandlebarThis solid aero bar is perfect for road use as it delivers a perfect strength to weight ratio for soaring past your competitors. It features an incredibly lightweight carbon construction and a flat-top riser central section that follows the natural arc of your arms with a ten-degree forward bend for a more ergonomic climbing position and easier breathing. To top it off, this race-ready bar features a wing-like shape which aids aerodynamics while its internal cable routing with guides accommodate cabling for electronic shifting. Features: Material: Carbon Use: Road; Track Shape Design: Compact Clamp Diameter: 31.8mm Buy Vision Components from Chain Reaction Cycles, the World's Largest Online Bike Store.