The Pivoting Coupler is used for cleaning the areas which is hard to reach, great for reaching the undercarriage of your car and cars rims, also great for gutter cleaning. It is with 1/4" quick-disconnect plug fits almost leading brands of pressure washer and accessories. Please note, There are 2 options pivoting coupler for you. Option A: 180 degree (5 gears) Pivoting Coupler. Option B: 240 degree (7 gears) Pivoting Coupler. Please select according to your needs Features: Material: Brass Max pressure:4500 PSI Pivoting Angle: 180 or 240 degree Gears: 5 or 7