The JM-1000 packs a mighty punch in a lightweight, compact design. The pump and motor are conveniently and safely housed in a lightweight, rugged diamond plate case that can be stored or transported in the smallest of spaces. The water jet system uses the steam of high pressure water that attacks the blockage and flushes it away. Clear blockages of grease, sand, and ice from 1-1/2" to 3" lines with ease and precision. The pulse action of this unit helps the hose slide around tight bends and pipe corners to help further it down the line and to help eliminate the clog. The built-in Water Sensor locates the moving water and automatically shuts off the motor if water is not flowing through the pump to help protect the unit from damage. General Wire has impressed with this powerful trifecta (lightweight, compact, and easy on the wallet) unit.