Shark has seven models of electric and gas engine jetters with up to 3,000 pounds of pressure per square inch (PSI). All models utilize Shark''s exclusive Pulse technology, which guides the hose through tight bends and turns within the drainpipe. The electric models consist of a hand-carry version and two portable units all operating on 115-volt electricity at 1,500 PSI. Designed for indoor use on two-inch to four-inch pipes, these electric models have Baldor motors. The gas engine models utilize Honda and Vanguard engines, ranging from four gallons per minute (GPM) to eight GPM and up to 3,000 PSI.