G-CLEAN Foam Blaster applies G-CLEAN Foam Blaster and OXY Foam Blaster All Purpose Cleaners as a thick clinging foam for a better and deeper cleaning. Adjustments can be made to apply foam in two forms, fan to a long range spray, and a variable selection to choose the amount of foam applied. The G-CLEAN Foam Blaster attachment works with pressure washers up to 4000 PSI/250 bar/28 MPa max by attaching to any 1/4 inch male quick-connect plug.