It permits you a supply of thick foam to remove the toughest dirt and best of all, it weighs less than one pound! You can choose from three different possible adjustments to obtain three different foam concentrations: wide open regulator if you want to increase the foam density to a completely closed regulator for less foam density: more air, more foam. This brand new featherweight foam cannon is made of military grade aluminum and comes with a 1/4" quick connect inlet plug, tube, and a 1-liter bottle. Works great with low P.S.I. pressure washers, but you must have a pressure washer to use this item. It will not work with just a water hose. Get a quality product that will last for years without breaking the bank