Closed Ball Tire ChuckSARDVISA heavy duty 2 packs 1/4 FNPT air chucks with 2 pcs 1/4 MNPT quick plug.250 psi maximum air pressure. Suitable for commercial and industrial air filling applications. No More Air Leaks: Closed ball structure with Teflon sealed raw tape, reduce the thread gap to prevent air leakage. More Quality Material: The ball inflator nozzle and quick plug are all made of alloy metal material, which is resistant to wear and aging, and will not rust even when used in a humid environment. Easy To Use: When you want to work with a closed ball pneumatic chuck, just connect it by turning the screw.Two ways to connect to meet your needs. Wide Application: SARDVISA 2 Pcs tire air chuck set can be applied for air pump and compressor accessories, and also can be applied for trucks, buses, cars, bicycles, motorcycles and more. Great tire inflator attachment brings convenience to your life.