The SmartPlug B50ASSYPWCombo Kit includes both a 50A 125V/250V inlet connector of non-metallic, high-performance, flame-resistant material  and a retro-fit connector. This Kit has been designed so it can be used with 3-wires (125V) or 4-wires (250V).  The retro-fit connector is designed to use your current cordset. You simply cut off the cord plug on your RV/Boat cord.  The connector has mechanical cord restraint, color coded wire guides and a water-resistant cordseal

• Quick & Easy Installation– Inlet mounting flange holes match twist-type holes for an installation that is typically finished in 30 minutes.
• Ease of Use– No twist required, the unique plug body shape and push-in design means it only goes in the right way every time – even in the dark!
• Multi-Point Locking System– Side clips lock the plug securely into the inlet which eliminates any stress on the pins from movement of the power cord.
• Eliminates Overheating– Increased pin & clip surface area greatly improves electrical conductivity during high amperage demand.
• Weatherproof Seals– Multi-fin silicone gaskets installed in the inlet cover and interior of the plug body eliminates moisture penetration.