Please Note Before You Buy This：this is only an inflator hose adapter, was designed to convert screw-on（twist-on） air chuck to lock-on air chuck, not for connecting to tire inflator/pump directly, please refer to the left second&third product image.Hose end thread is standard us fine thread connection（0.305"x32TPI）, the same as the thread on all USA standard car valve stems, compatible with screw-on(twist-on) air chuck's inner thread. | Premium Tire Inflator Hose Adapter, designed for tire inflator hose converting, easily convert tire inflator's twist-on connection to lock-on connection. Screw adapter end onto original inflator hose, press to clamp adapter head onto tire valve, start the inflator for a quickly and none leaking inflation. | Excellent tight seal lock-on tire chuck, make sure no annoying leaking. High quality strengthen nylon-wrapped rubber hose, durable and flexible. | All metal construction air chuck, portable tire inflator chuck adapter, for bike, motorcycle, car air fill. Open flow 90 degree thumb-press air chuck, easy and quick hands-free inflation. | Buy with confidence,we always stand behind all of our items. Use under 200psi,heavy truck/vehicle forbidden.