1/4 inch 6.35mm Microphone Mono TS Socket Female Connector Panel Mount Adapter 10 Pcs

They're just very good.

Decent quality for the price. Perfect for my uses.

There's not a lot to say about these except that the manufacturing quality is good. I installed all of them in various instruments and ordered more. (I repair guitars professionally...)

Undoubtedly, these jacks are very cheaply priced at well under a buck each, but you get what you pay for. They are functional but sloppily made. Ideally, each one should be exactly the same, but when testing them with a 1/4 inch plug, I find that some make better contact than others. Some of the non-metal parts have burrs on their edges, so that they fit imperfectly on the jack. These are quality control issues, and could be avoided. Moreover, each jack comes with only one washer- not enough, in my opinion. For all of that, these jacks seem sturdy enough, and probably won't break on you. But a good alternative to the overpriced Switchcraft jacks they're not.I have bought Chinese-made jacks from Musiclily that are far better made and not that much more expensive. Unfortunately, those seem to have been discontinued. These GDQLCNXB jacks would probably be OK for undemanding applications, or as a temporary fix. But there are certainly better buys out there...shop around.

The terminals dont read;y accept solder. It beads up and falls off. If it does stick. Any movement and it soon pops off. Yes i do know how to solder. I was finally able to make it workable by sanding the terminals first . That got it to stick but still not a normal solder flow.