A permanent-magnet motor combines with a stainless steel shaft and steel-reinforced seal for powerful, reliable performance. Each measures a compact 4 x 5-1/2 x 3-1/4 and includes 29 of 16-gauge tinned copper wire. Wire is caulked to prevent water from wicking through insulation jacket. Mercury free. Automatic switch. Three-year warranty. Cancer and Reproductive Harm- www.P65Warnings.ca.gov. Type: Submersible Bilge Pump.