Package include: Pressure Washer Adapter Set, Pressure Washer Coupler ATTENTION: INSIDE DIAMETER IS 14mm, NOT 15mm. If your fitting is 15mm, it may cause leakage. SO NOT FIT electric pressure washer of Sun Joe, Campbell, MI-T-M, AR Blue, Stanley, Cleanforce , Simoniz with M22 15mm fitting. If not sure your pressure washer needs M22 15mm or M22 14mm fitting, please contact with seller. M22-14 swivel + 3/8 plug, 3/8 quick disconnect + M22 14mm male. Convert the M22 thread-on couplings to a 3/8 inch quick connector. Apply on universal gun, hose and pump connection. Easy to connect and disconnect. Working Pressure is up to 5,000 PSI. It used in a lot of situations where high pressure connections are frequently assembled or disassembled. Ideal for quick exchange of pressure washer outlet, sewer jetter hose, guns and nozzles. It makes a solid connection with quick coupler each time. Convert 1/4" quick disconnect plug to 1/4 male NPT fitting. Working pressure is up to 5000 PSI. It is made of stainless steel. Chemical resistant for long life. Fit most pressure washer equipment. Package include: Pressure Washer Adapter Set, Pressure Washer Coupler. ATTENTION: INSIDE DIAMETER IS 14mm, NOT 15mm. If your fitting is 15mm, it may cause leakage. SO NOT FIT electric pressure washer of Sun Joe, Campbell, MI-T-M, AR Blue, Stanley, Cleanforce , Simoniz with M22 15mm fitting. If not sure your pressure washer needs M22 15mm or M22 14mm fitting, please contact with seller. M22-14 swivel + 3/8 plug, 3/8 quick disconnect + M22 14mm male. Convert the M22 thread-on couplings to a 3/8 inch quick connector. Apply on universal gun, hose and pump connection. Easy to connect and disconnect. Working Pressure is up to 5,000 PSI. It used in a lot of situations where high pressure connections are frequently assembled or disassembled. Ideal for quick exchange of pressure washer outlet, sewer jetter hose, guns and nozzles. It makes a solid connection with quick coupler each time. Convert 1/4" quick disconnect plug to 1/4 male NPT fitting. Working pressure is up to 5000 PSI. It is made of stainless steel. Chemical resistant for long life. Fit most pressure washer equipment.