SmartPlug BM50S 50 Amp Boatside Inlet - Stainless Steel - 50A 125V/250V Stainless Inlet - The 50 amp stainless inlet easily retrofits to the existing 4 hole pattern and footprint as the traditional twist-type inlet. The 50A inlet can be wired for 125V or 250V service and is used in conjunction with the 50A connector (BF50). The Inlet cap and flange are made with 316 stainless steel. - Features: - Can be used with 125V or 250V service Can be plugged in easily in the dark or awkward locations effortlessly 20x more electrical contact means no overheating Weatherproof seals to eliminate corrosion Triple locks are stronger and easier to use Lid locks in closed position.