The Revolution Natural Cleaner has been specifically formulated to dissolve and remove coffee oil build up that occurs on portafilters, group heads and group valves. The concentrated formula is highly effective. Perfect for cleaning not only espresso machines but also carafes, airports and coffee urns. Phosphate free. Made in USA. A portion of the proceeds of Revolutions sales go right back into the community. - Volume 20 oz - Sold per each