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 electric pressure washer. If the gasket needs 15mm, it may cause leakage. 8-piece universal high pressure washer adapter set, 4 types of connectors include: metric M22-14 rotating female + 3/8" plug, 3/8" quick disconnect + M22 male, 3/4" Female + 1/2''quick 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 washer or connect the hose of the high-pressure washer 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 electric washing pump. High-change couplers provide safe and fast accessories, easy to connect and disconnect. Maximum. The pressure is up to 5000 PSI. Focus on high pressure washer accessories and always support our products. If you have any questions, please feel free to contact us. application 1. Two quick coupling kits connect the water outlet of the pump to the hose of the high-pressure washer, and connect the hose of the high-pressure washer 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 electric flushing pump. packing list 2 x Pressure Washer Coupler, M22-14 Rotating Female + 3/8'' Plug. 2 x pressure washer coupler, 3/8" quick disconnect + M22 male connector. 2 x pressure washer coupler, 3/4" female + 1 /2" quick connection. 2 x pressure washer coupler, 1/2'' plug + 3/4'' male plug.