LIGHTWEIGHT,PRACTICAL, CONVENIENT PRESTA VALVE ADAPTOR ---Easy to install and easy to use, simply screw and inflate automotive pump, compressor. This will enable you to use a car foot pump or compressor to inflate your tyres and pumpsUSE GAS STATION PUMP ---conveniently inflate your bike tires and check pressure at the gas stationEasy to use: Direct replacement,easy to install, only use the wrench to put the caps onto the tire valve stemWide application: Widely use in variety of bicyces likes road bikes, mountain bikes, folding bikes etc.With these converter adapters, you can inflate your bicycle tires freely by using Schrader pump or car compressorConstructed with standard screw threads and rubber o-ring seal design that can nicely prevent leakage.Colour:goldMaterial:copperPackage Contents:10 x Presta valve adaptersOnly the above package content, other products are not included.Note: Light reflection 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.