Compatible with most Pressure Washers, this Foamer Lance Pro 4000 PSI 4.8 GPM (FL803) shoots over 20 feet of dense foam with pencil tip to fan jet spraying. It allows cleaning agents or disinfectants to be applied evenly over a large surface and helps ensure that chemicals do not go through your pump. The adjustment knob allows for variable chemical dilution while a variable spray pattern helps you control the density. The Foamer Lance allows you to produce wet foam which allows more efficient use of chemical solutions.