The Pressure Washer Foamer Injector by Briggs & Stratton is designed to attach to pressure washers to apply cleaning solutions. It features brass construction with a 1/4 inch NPT female inlet and outlet. The foamer injector mixes water and chemical concentrate into rich, clinging foam that clings to surfaces for maximum cleaning contact time. It has an adjustable metering tip that controls the amount of chemical drawn into the water flow. This accessory works with most pressure washers up to 3500 PSI. It provides an effective way to apply soaps and detergents using a pressure washer.