Description The item is a set of 10pcs bike pump adapters, which is made of durable copper-plated zinc alloy and rubber materials, and can be used with a pump or an air compressor to convert a Presta to a Schrader valve. It can also be used to turn a UK into a US valve. Features - 10 pieces of the pump adapters connectors in one set will be sold together. - Color: as shown in the pictures. - Material: durable copper-plated zinc alloy and rubber. - Size: Total length: about 2cm; Big head diameter: abou 1cm; Small head diameter: about 1cm. - and Presta to Schrader Bike Pump Adapters Connecters. - Can be used with a bike pump or an air compressor. - Convert a Presta to a Schrader valve. - Also turn a UK into a US valve. - Light weight, easy and convenient to installPackage list: 10 * Presta to Schrader Bike Pump Adapters Connectors