tHE 90-617 IS A heavy duty high capacity accessory plug and socket rated at 20 amp. for 12 volts. #TD/DPG/PBA The socket has a nylon body and metal core with snap on vinyl cap. The plug comes with a vinyl weather skirt that allows the plug to socket connection to stay dry when used outdoors. The lighter socket which has a heavy nylon UV resistant body and a nickel plated core. A vinyl opening cap inserts into the core and snaps over the socket rim to produce a waterproof seal. The socket works with all pop out style lighter plugs or with standard accessory plugs. Internal prongs hold the plug for better vibration resistance. The terminals are male 0.250 or 6mm style crimp terminals.