Drains the bilge almost dry. Up to 4.0 GPM flow. Pumps down to 1/8″. Filter-free design. Self-priming to 9.5′. Able to run dry without damaging the pump. Back flow prevention. Rotating pump head and ports. The pump comes equipped with connections for 3/4″ hose barbs and a 3/4″ plastic, 90� thru-hull fitting and a control panel switch. 12 volt.