This plastic drum pump fits both 3/4-inch and 2-inch openings. It comes with a convenient pail adapter that snaps onto 5-gallon pails. It fits 15, 30 and 55-gallon drums and pumps 8 ounces per stroke. Sprayer/Hose/Nozzle Type: Spigot; Sprayer/Nozzle Type: Pump; For Use With: 15-, 30-, 55-Gallon Drums, 5-Gallon Pails; Material(s): Plastic.