About this item
1. AIR TIGHT SEAL CHUCK:The locking air chuck built with 3 clamps that quickly lock on to the tire valve stem with a simple push. Pull back to release,no air leaking
2. EASY TO USE: A locking device on the chuck bitten the tire valve stem so it can be inflated and used without hands holding ,make you hand free and you just need to pay atttention on the tire gauge with inflator inflating to your desired pressure
3.BUILT TO LAST: The air chuck are made of solid brass nut and Nickel-plated iron ,durable and resistant to oxidation.Keep good performance for many years. 
4.WIDELY APPLICATION - Locking Air chuck with a 1 /4 inch F-NPT are suitable for most tire gauges and inflator to control air flow during the inflation. Don't use exceed the max pressure 150PSI
5.CLOSED FLOW AIR CHUCK: lock on air chuck enables the shutoff valve to shut down the air flow when the stem is not opened, air only flowed when you slide down the sleeve of chuck and bi