Allstar 5 GPM Flow Plastic Construction Self Priming Drum Pump for 55 Gallon Drum features a drum pump/siphon which is designed to be used with a 55 gallon drum. The unit has a self-priming bulb and features a 5 GPM flow rate. It is made from quality plastic construction. It is meant to be used with low viscosity fluids. It is backed by a 90-day limited factory warranty and sold individually.