Johnson Cartridge Bilge Pump 750gph #18932703Hose Size: 3/4", High impact thermoplastic housing. Corrosion, chemical and fuel resistant. Permanently lubricated bearings. 316 stainless steel motor shaft and hardware. Compression lip seal. Abrasion resistant glass resin composite impeller. Tin coated 16 gauge wires 30" long. Tslot for easy float switch attachment. 12V