Attwood 5505-7 Sahara MK2 500 GPH 12-Volt Automatic Bilge PumpPN 5505 7, 500 GPH, 12V, Fuse size: 3A, Outlet type: 3 4" & 1" barbs, Check valve: yes, Wire length: 29 1 2" The easiest, most reliable automatic bilge pump ever designed The only automatic bilge pump that eliminates air locks, Patented X Air Impeller ejects trapped air in the pump and pipework Flexible Outlets: 90 rotatable elbow outlet allows users to install the pump anywhere in a full 360 orientation Single Hand Pump Cartridge Release: Convenient