[Package Include] 10Pack pressure washer adapter set included 6 kinds of couplers: Metric M22-14 female to 3/8inch plug quick disconnect fitting, 3/8inch socket to M22 male, 3/4inch female to 1/2inch socket, 1/2inch plug to 3/4inch male, 3/8inch male plug to 3/8inch NPT male, and 3/8inch male plug to 3/8inch NPT female. [Compatibility] Note: The inside diameter of M22-14 mm swivel quick disconnect fitting is 14mm, not 15mm, so it is not suitable for electric pressure washers with M22 15mm quick connect fittings. [New Upgrade] Pressure washer quick connect kit is made of stainless steel, brass upgrade version and that is more rust resistant and . Working pressure up to 5000psi. Advanced technology and high-precision threaded adapters safe and leak-free. [Easy Install] The pressure washers and quick connector plug nipples are easy to be assembled manually, these adapter sets and nipples make a quick connection for hose, water pump, ball valve, telescoping wand and so on. [NPT