USE Aero Aluminium ExtensionsProviding your rapid road bike with a super-streamlined form, these aluminium-made extensions let you take up an aerodynamic spot as you battle to beat the clock. Compatible with USE's TULA and Boost aero bars, each post provides an angled and comfortable support as you stretch out and get your head down. Anodised for a durable finish and featuring cut-marks to let you find your optimal length, the podium is only a ride away with these excellent extensions on board. Features: Material: Aluminium Compatibility: CNC-machined CrMo Outer Diameter: 22.2mm Finish: Anodised Cable Routing: Integrated SlotsBuy USE Components from Chain Reaction Cycles, the World's Largest Online Bike Store.