Youmile 10 Pcs DC-022B DC Power Jack Socket 5.5 x 2.1mm Female Panel Mount 2 Pin Connector for Electronic Product with 10 Pcs Waterproof Cap, 10 Pcs DC Male Plug

Overall the price was good, but when it comes down to the quality of the jack plug sockets I have to say they are simply not fit for purpose. The nuts that are supposed to hold the sockets in place can barely grab the plastic thread of the socket and as a result, simply will not hold when you pull the jack plug out The nuts seem more of a mismatched afterthought.

Nothing solid it's plastic and outer ring isn't joined just touched so negative side is poorWhen unplugging it rips apart the jack plug and the receiver barrel falls apartNot good

All goes well until you start to use the socket. The plug is so tight in the socket that when you come to remove it, you just strip the plastic thread around the socket, and pull the whole thing out of the mounting that you've carefully made, leaving the nut behind. I can't see any situation in which these would work as intended. Plastic thread, metal nut, not good. Gonna go and buy the metal ones now.