Cannondale 27.5x1.75-2.125 60mm Presta Valve TubeThe Cannondale 27.5x1.75-2.125 60mm Presta Valve is a durable butyl rubber tube with a discreet black Presta valve to blend into your aero rims. Designed to hold up in the most brutal conditions as you train or race. Removable Core.884603614839