Hand-Operated Vertical-Pull Poly Pump for 16 to 55-Gallon Drums with 2" Opennings Includes adjustable bung adapter. Used for transfer of Petroleum-based products, antifreeze, strong chemicals and solvents that are compartible with the materials used in the body and downtube of the pump. Nylon/stainless steel downtube adjustable for 16 to 55-gallon drum size. Nylon and stainless steel with Teflon® seals body material (bung adapter made of polypropylene). Twisting non-drip spout discharge. 8 ounces per stroke delivery.