Rotating Wash Brush 1/4” quick disconnection fitting for pressure washer. Uses water flow from pressure washer to gently spin a set inner brushes for more effortless cleaning. Perfect for cleaning painted surfaces, such as vehicles and boats, and other flat surfaces including window panes and stucco.(Please notice that ,Due to the 1/4‘ coupler ,it get a 360 degreee freedom on it) Ideal for dispensing pressure washer detergent: supply pressure washer with detergent and attach the rotating wash brush to the trigger gun. The best companion for your pressure washer while cleaning your vehicle or home siding.