Hands Free & No Leakage: This premium 90 degree air chuck with standard tire valve fine thread is specially designed to solve the annoying air leakage problem by converting the screw-in (screw-on) air chuck of the tire inflator. Just put it on the tire valve stem and lock the clamp, then start your hand-free tire inflation with its excellent sealing performance. Easy to Use: Screw this premium air chuck adapter into the hose end of your tire inflator, then clip this open flow tire chuck onto the tire valve stem, strong hooks and easy push-in make it a perfect no air leakage and fast and efficient inflation. Plug the open air chuck into the hose and hook it onto the valve stem. It is easy to press and strong enough to stay in place. Sturdy and Durable: Locking air chuck constructed of high quality zinc alloy for greater strength and durability, corrosion resistance and wear resistance, which is a perfect choice whether for professional or home use, will serve you faithfully for years.