It makes soft fluffy snow foam, and simply. It works with any pressure washers, small and big are all working perfectly. It saves water, It's -. It's touchless car wash, it saves your time and energy. The thick foam suds melt rods and dirty on paint, thus it reduces swirl marks and scratches. Applicable pressure washer : for YILI Series How To : Put the shampoo or wash powder into the bottle. Fill the water into bottle,make the proportion of shampoo and water is ! You'd better warm water(not hot) to help make more foam. Shake the foam lance to make the shampoo Dissolve and more foam. the bottle to foam lance unit. the foam lance to car washer and then you can it! Capacity: 750ML Colour: white Material: plastic Package Contents: 1 x Car Soap Sprayer Only the above package content, other products are not included. Note: Light and different displays may the color of the item in the a little different from the real thing. The measurement allowed error is +/- 1-3cm.