Blue Mule Power Wash Combo Foam-All/Spray-All 10: Stainless Steel Downstream Chemical Injector with Foam/Spray Nozzles for 2.2-3.5 GPM Pressure Washers Optimized to dilute and apply cleaning chemicals as wet, clinging foam or chemical spray using a 2.2-3.5 GPM pressure washer. Machined from stainless steel with no inferior brass components. This heavy-duty injector kit is made in the USA! Injector connects to pressure washer discharge to protect the pump from harmful chemicals. Includes a pattern foam nozzle for quick coverage and zero degree nozzle for increased range (up to 20' foam throw). Apply non-foaming chemicals using just the fan pattern spray nozzle. Eliminates the need to carry chemicals with the discharge hose and allows for increased mobility to clean to hard-to-reach areas such as rooftops.