Features: Crafted from Metal, this 1/4FNPT tire chuck set offer a stable and leak frees connection to your tire inflator gauges or air compressor, making it essential tool for maintenance. The locking air chuck with 3 clamps that quickly Locks on to the tire valves stem with a simple push. Pull back to release,no air leaking. Locking Air chuck with a 1/4FNPT are suitable for most tire gauges and inflator to control air flows during the inflation. Donot use exceed the maximums pressure 150PSI. Locks on air chuck enables the shutoffs valves to shut down the air flows when the stem is not opened, air only flowed when you slide down the sleeve of chuck and bit the valves stem Suitable for vehicle owners, driver, and automotive enthusiasts who demand precisions and safe in maintaining proper tire pressure. Specifications: Material:Metal Quantity:1Pc,2Pcs Package Includes: 1Pc/2Pcs Locks on Air Chuck note: Please allow 1mm errors due to manual measurement. Due to the differences between different monitors, the picture may not reflect the actual color.