Plastic Waterproof Cap Black Red White DC Power Jack 5.5X2.1 5.5*2.5mm For DC-099 DC-022E Socket Female Connector
https://www.vogueparade.com/shopping/EN/5/6/1005003400538903/plastic-waterproof-cap-black-red-white-dc-power-jack-55x21-5525mm-for-dc-099-dc-022e-socket-female-connector//