The swivel coupler has a 1/4" female quick connector and a 1/4" quick-connect plug. Connect the pressure washer nozzle to the pressure washer swivel coupler, and then connect the swivel coupler to the wand or spray gun. The quick-connect swivel coupler is made of durable brass and stainless steel. The operating pressure is rated at 4500 psi. The angled swivel coupler is adjustable up to 240 degrees for 7 different cleaning angles. The swivel coupler can pivot to 45 degrees, 90 degrees, and 120 degrees. Ideal for reaching under your car and around your car's rims, and also excellent for cleaning gutters. The high-pressure gutter cleaner is used to reach hard-to-access areas. Ideal for safely cleaning gutters from the ground. Quick connection to most telescopic or extension wands.