Features Newly upgraded and made of high-quality stainless steel. Not easy to rust, more durable. High replacement couplers provide secure and quick fittings, easy to connect and disconnect. Working pressure up to 5000 PSI. ATTENTION: M22 14 mm swivel fitting has 14 mm inside diameter, NOT 15mm. NOT FIT electric pressure washer of Sun Joe, Campbell, MI-T-M, AR Blue, Stanley, Cleanforce, Simoniz. If washer needs 15 mm, may cause leakage. 8-pack universal Pressure Washer Adapter Set, 4 kinds of couplers includes: Metric M22-14 female + 3/8'' plug, 3/8'' socket + M22 male, 3/4'' female + 1/2'' socket, 1/2'' plug+ 3/4'' male. Two Quick Connector Sets connect water outlet of pump to pressure washer hose or connect pressure washer hose to gun. The other two Quick Connect Kits convert 3/4'' threads to quick-release fittings, connecting all 3/4'' standard garden hose to water inlet of power washer pump. The pressure washer adapter set makes the installation and removal so much faster. Save a lot of time and effort. The connections are tight and no leaks. Product DescriptionNewly upgraded and made of high-quality stainless steel. Not easy to rust, more durable. High replacement couplers provide secure and quick fittings, easy to connect and disconnect. Working pressure up to 5000 PSI. ATTENTION: M22 14 mm swivel fitting has 14 mm inside diameter, NOT 15mm. NOT FIT electric pressure washer of Sun Joe, Campbell, MI-T-M, AR Blue, Stanley, Cleanforce, Simoniz. If washer needs 15 mm, may cause leakage. 8-pack universal Pressure Washer Adapter Set, 4 kinds of couplers includes: Metric M22-14 swivel female + 3/8'' plug, 3/8'' quick disconnect + M22 male, 3/4'' female + 1/2'' quick connect, 1/2'' plug+ 3/4'' male. Two Quick Connector Sets connect water outlet of pump to pressure washer hose or connect pressure washer hose to gun. The other two Quick Connect Kits convert 3/4'' threads to quick-release fittings, connecting all 3/4'' standard garden hose to water inlet of power washer pump.