GODESON 2 Pack Brass Lock On Air Chuck, 1/4FNPT Closed Push, Silver and Gold

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. CLOSED FLOW AIR CHUCK:GODESON 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 bit the valve stem.