10PCS/Lot 5.5*2.1 MM DC Power Supply Plug Connector DC017 Female Metal Panel Mount Socket Jack DC Connector Terminal Adapter
https://www.vogueparade.com/shopping/EN/4003/1/1005002935499725/10pcslot-5521-mm-dc-power-supply-plug-connector-dc017-female-metal-panel-mount-socket-jack-dc-connector-terminal-adapter//