Ray-JrMALL MR.Jiang Bicycle Bike Presta to Schrader Valve Air Pump Adaptor You may be unable to install some small parts, such as hot wheels, just because of your bike's Presta valve, with this adaptor, you can install those parts freely. Suitable for bikes with Presta valve. With built-in rubber sealing ring to prevent air leakage. Full brass + rubber ring (ensure good sealing). Color:bronze.