Material: All of these bicycle accessories are made of copper, without burrs on the , not easy to fade and strong resistance and durability. valve adapter takes very little space and you can take it with you or store it in a corner Easy to Use: The Tire Valve Extenders is quick and easy to operate. Simply remove the existing valve dust cap and screw in the tire valve, and then tighten the valve stem. Wide application: bicycle pump adapter valve adapter set suitable for mountain bikes, road bikes, fixie bikes, inflatable toys, air mattress, ball, balloon, yoga ball and swimming ring, etc. Color: Gold Material: copper + rubber Package Contents: 1 x Bicycle Valve Adapter kit Only the above package content, other products are not included. Note: Light and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.