This Bel-Art SP Scienceware Poly-Hand 30 Gallon Drum Pump is in unused condition and is guaranteed to be fully functional. This item came from a large pharmaceutical company that had surplus new old stock inventory and may show slight aesthetic signs of shelf wear. Please feel free to contact us with any questions. The Poly-Hand Pump threads directly to a standard drum bung or carboy. It is constructed entirely of rugged polyethylene and is inert to strong acids, alkalis and many solvents. Delivers by positive pressure on the downstroke of the piston; does not pressurize the vessel Ergonomic ?T? handle fits comfortably in a gloved hand Pump will efficiently deliver against a 3.65m (12ft) head of water and empty a drum or carboy to within 3 mm (??) of the bottom