DC-022 DC Power Socket Female Jack Screw Nut Panel Mount Connector DC022 5.5*2.1MM 5.5X2.5 With Waterproof Cap
https://www.vogueparade.com/shopping/EN/5/1/1005003506108409/dc-022-dc-power-socket-female-jack-screw-nut-panel-mount-connector-dc022-5521mm-55x25-with-waterproof-cap//