American Specialty Wonder Pump Patented self-priming pump with an endless list of uses. Just shake pump to start liquid flowing. Works with almost all liquids, including water, gasoline, diesel fuel, kerosene, fertilizer, insecticides, thinnrs, paints, solvents and lubricants to the thickness of 20 grade oil. Can be used to quickly empty of fill fish ponds, aquariums, water beds, fountains, bird baths and above-ground pools. Safely transfer gasoline. Note: not for use in all gasoline tanks.