Smart Plug 30 Amp Non-Metallic InletEliminates overheating increased pin & clip surface area greatly improves electrical conductivity during high amperage demand 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 Weatherproof seals multi fin silicone