Buwico&reg; High Quality Copper Road MTB Bike Bicycle Pump Accessories Valve Adapter Wind Fire Wheels Adapter Gas Nozzle Converter Adapter Cycling Tire Tools 100% Brand New and high quality. Light, easy and convenient to install. Convert a Presta valve to a Schrader valve Used with a Bicycle Pump or a Air Compressor. Built-in rubber seal ring not leak.