ieasysexy 10Pack Presta to Schrader Valve Adaptor Air Pump Converter Bike Car Cycle Multipurpose Material: Zinc Alloy ( Copper Plated ) Size:Approx.1.5cm x 0.9cm x0.7cm.(L*Big head diameter*Small head diameter) Also turn a UK Valve into a US Valve Convert a Presta Valve to a Schrader Valve. 100% Brand new and high quality