Note: The inner diameter of the M22 14 rotary joint is 14mm, not 15mm. Not applicable to Sun Joe, Campbell, MI-TM, AR Blue, Stanley, Cleanforce, Simoniz electc pressure waer. If the gasket needs 15mm, it may cause leakage.8-piece universal high pressure waer adapter set, 4 types of connectors include: metc M22-14 rotating female + 3/8 plug, 3/8 quick disconnect + M22 male, 3/4 Female + 1/2quick connection, 1/2 plug + 3/4 male.Two quick coupling kits connect the water outlet of the pump to the hose of the high-pressure waer or connect the hose of the high-pressure waer to the spray gun. The other two quick connect kits convert 3/4 threads into quick release fittings, connecting all 3/4 standard garden hoses to the water inlet of the electc waing pump.High-change couplers provide safe and fast accessoes, easy to connect and disconnect. Maximum. The pressure is up to 5000 PSI.Focus on high pressure waer accessoes and always support our products. If you have any questions, please feel free to contact us.application1. Two quick coupling kits connect the water outlet of the pump to the hose of the high-pressure waer, and connect the hose of the high-pressure waer to the spray gun. 2. The other two quick connection kits convert 3/4 threads into quick release fittings, and connect all 3/4 standard garden hoses to the water inlet of the electc fluing pump.packing list2 x Pressure Waer Coupler, M22-14 Rotating Female + 3/8 Plug. 2 x pressure waer coupler, 3/8 quick disconnect + M22 male connector. 2 x pressure waer coupler, 3/4 female + 1 /2 quick connection. 2 x pressure waer coupler, 1/2 plug + 3/4 male plug.