1、Aluminum Material: Car refrigerant hose joint is made of high strength aluminum, rugged, chemical resistant, not easy to crack, rust and deform. 2、10pcs in Total: The package contains 10pcs air conditioning hose connectors, perfect for your rebuild, repair, and maintenance needs. 3、Universal Application: Refrigerant hose joint is suitable for refitting of air conditioning pipes of all cars, trucks, engineering vehicles. 4、Dimensions: The small hole outer diameter of this hose fitting is 8.41mm/0.33in, large hole inner diameter 20mm / 0.79in, with R12 3/8in sleeve. 5、Dependable: Professional manufacturing, strictly follows the factory quality control, high performance, can be used for a long time.