Features： 1、Straight Foot Dual Head Design: The air chuck is designed for inner single wheels or valves that are difficult to touch, with a 30 degree reverse chuck for outer wheels. 2、Leakage Proof: Featuring a closed flow tire chuck, this truck tire chuck is specifically designed for slow inflation, with an internal valve that only allows air flow when the chuck is connected to the tire valve stem. 3、1/4in NPT Thread: The inflatable air chuck is precisely machined 1/4in NPT threaded end for compatibility with most air compressor hoses and accessories. 4、Aluminum Alloy and Convenient Use: Made of premium aluminum alloy, this dual head air chuck is resistant to rust and oxidation for extended lifespan. It also allows you to touch inner wheels without getting your hands dirty. 5、Versatile Usage: The air compressor air chuck is suitable for air pump and compressor accessories for trucks, buses, cars, and motorcycles. Specification： Item Type: Inflatable Air Chuck Material: Aluminum Alloy Thread Size: Approx. 1/4in NPT Fast Inflation Port: In Line Inflation Port for American Tire Nozzle Inflation Fitment: Suitable for Air Pump, Air Compressor, Trucks, Buses, Cars, Motorcycles Package List： 1 x?Inflatable?Air?Chuck