12 Piece Pump Adapter Ideal for most bicycle tires and most balls and inflatable mattresses. Package Contents: 4 x Valve Converters, 2 x Inflator Needles, 2 x AV Right Angle Extensions, 2 x SV Extensions, 1 x Air Nozzle, 1 x Air Hose Brass 90 Degree Elbow Extension Valve, Schrader Valve / American Valve, Comes with cap and core, which is suitable for all passenger cars, light and heavy trucks, motorcycles and RVs with standard tire valves. The extension allows you to easily control and inflate your twin tires, which will allow you to use a floor pump or compressor to inflate your tires. Made of Copper: All these bicycle accessories are made of copper with extremely strong and corrosion-resistant thread. Thanks to the high-quality workmanship, the set will be a long-term companion. Different valves are needed for different uses: for wheels, balls, air mattresses or other similar uses. Easy to carry: This bike adapter set is small in size, only takes up a little space. It is very convenient to take anywhere.