15MM M22 EXTENSION HOSE THREADS: This Sun Joe pressure washer hose features ends that are both 22mm-15mm female swivel couplings. Check that the male nub on your power washer gun measures 15mm (about 5/8″) to ensure compatibility. SPX PRESSURE WASHER COMPATIBILITY: Our pressure washer extension hose is made to fit all SPX series pressure washer models, except the SPX4003 series. CONNECTION FITTING: Designed to fit most electric and gas pressure washers up to 2,900 PSI with standard M22-15mm (M22) connections. Use a 15-to-14 mm adapter if you’re uncertain if your model is a match. ADDITIONAL COMPATIBILITY: This pressure washer extension hose is compatible with AR Blue, Stanley, Active, Simoniz, Briggs, and Stratton 020681 pressure washers. It is not compatible with Karcher K2–K5, Ryobi 1600/1800/2300, Simpson/Honda pump gas washers, or Greenworks GPW series power washers without an adapter. GO WITH JOE: Joe brands offer a wide range of innovative, high-quality tools for the home, yard, garden, and garage. We are dedicated to providing the right tool for every household, making it easy to Go with Joe to get the job done.