The new Rule Mates are available in 500, 750 and 1100 GPH models. Rule has been building bilge pumps for 30-years. The pumps are preferred by yachtsmen and commercial fishermen the world over. Features and Benefits: All-in-one pump & switch - No float switch required. Pump turns on when water level rises & shuts off when water is removed. Will not pump oil - Straight motor oil will not turn pump on. Snap-off strainer for easy cleaning.Anti-Fouling impeller. Limited three year warranty.