Note: Convert M22 15MM metric system to M22 14MM metric system. The M22 14mm connector is compatible with Generac, Simpson, Briggs Stratton, Craftsman, Karcher, Ryobi pressure washers. The M22 15mm connector is compatible with Sun Joe, Campbell, MI-TM, AR Blue, Stanley, Cleanforce, Simoniz, Excell electric washers. If you are not sure about the accessories on the pressure washer attachments, please measure the outer diameter of the female end or the inner diameter of the male end. If it is 14mm, it is an M22 14mm accessory. If it is 15mm, it is an M22 15mm accessory. The pressure washer coupler connects the power washer gun to the hose, and the hose connects to the pump. In case of leaks, apply Teflon tape to the external threads of your wand or other products. Made of high-quality brass, corrosion-resistant. Working pressure up to 4500 PSI AMZ Tool specializes in pressure washer accessories and always supports our products. If you have any questions, please feel free to contact us.