Package content: 4*Adapter CONVENIENCE: bicycle tire can be inflated using standard Schrader pump and car air compressor BE PREPARED: adapter can be left on the tire stem so it is always available to inflate your tires USE GAS STATION PUMP: conveniently inflate your bike tires and check air pressure at the gas station EASY TO INSTALL: screw on the Presta stem of your road fixie hybrid MTB trail Fat bike and e-bike QUALITY: Solid Brass with rubber o-ring seal Note: 1. Please allow a little error due to manual measurement. Please make sure you don't mind before bidding< br> 2. The color may vary depending on the display. Please understand< br> Note: Hello, please pay attention to your shipping address when purchasing products. If your receiving information (such as name, street, house number, doorbell/email without name) is incorrect, the order will not be delivered correctly.)