1. Dual Head: Equipped with two push pull chuck, straight head is designed for inner wheel single wheel or hard to reach valves, and 30° reverse chuck is for outer wheel. 2. Leakproof: Air chuck is a closed tyre chuck designed for slow inflation with an internal shut off valve. Air only passes through the pneumatic chuck when it is engaged with the tyre valve. 3. For 2 Wheeled Device: Air chuck has dual head and is designed for use in two wheeled devices such as internal and external fetal air door rods on two wheeled trucks, semitrailers, trailers, motorhomes and campervans 4. 1/4 Inch Connector: The air chuck adopts 1/4 inch FNPT female fittings, making it compatible with most air compressor hoses and fittings. Comes with U.S. male, Japanese male, and European male fittings for all vehicle tyres and inflators . 5. Multifunction: 2 in 1 air chuck with pressure checking and inflation functions. The tyre chuck is designed with a push in chuck which eliminates the need to screw the chuck onto the valve stem, simply push the chuck onto the valve for a good seal. Specification: Item Type: Dual Head Air Chuck Material: Aluminum Alloy Size: 1/4 inch NPT external thread With US standard male connector With Jap. standard male connector With EU standard male connector Quick inflation port, direct plug in inflation port suitable for tire valve inflation Compatibility: Compatible with inflator air pump compressor accessories for truck bus car motorcycle Package List: 1 xDual Head Air Chuck 1 x Sealing Tape 1 x US Standard Male Connector 1 x Japanese Standard MaleConnector 1 x European Standard Male Connector