THE RACE GRAVEL TIRE . The Schwalbe G-One R is made for use in light terrain, on gravel roads and asphalt. Thanks to the Super Race carcass, it combines souplesse, speed and control at the highest level.Features:- Angled side knobs work together with the Super Race carcass to create the best cornering grip.- Super Race carcass (Souplesse construction) for a particularly smooth ride with low rolling resistance and high puncture protection.- New boomerang profile for the best uphill traction and ideal rolling behavior.Specifications:- Size: 700 x 40C- Execution: Evolution Line, Folding Bead- Weight: 480g- Load: 70 kg- Tube: 17,18