Packaging: Includes 1 double headed closed flow pneumatic chuck, 1 ball head pneumatic chuck, 2 male quick plugs/fittings, and 1 PTFE tape to meet your usage needs Easy connection: Both pneumatic chucks are equipped with 1/4 inch NPT internal threads, which can be easily connected to air hoses, air compressors, or tire inflation pressure gauges to inflate tires. It also includes two standard 1/4 inch male quick connectors, which can be easily and quickly connected to the female quick connector of the trachea. No more air leakage: All threads are designed in accordance with the American standard 1/4 "NPT specification and equipped with waterproof PTFE tape to reduce thread clearance and prevent air leakage. Material: Made of high-quality metal alloy, it has higher strength and durability, corrosion resistance and wear resistance, and a long service life. Suitable for: The maximum pressure rating of this kit is 250 PSI, widely compatible with various vehicles, bicycles, motorcycles, cars, compressor accessories, etc., and equipped with multiple adapter functions, it can be used for multiple purposes.