I bought two types of 18 AWG wire to use with this. The second one I bought was looking for something with very thin insulation. However, he didn't even come close to this connector. I had to shave off the insulation to fit the plug (which completely defeats the whole purpose of a quick connection). I couldn't shave it anywhere near thin enough to fit in the slit. I can't believe you can find 18 AWG to match. It seems to work fine with 22 AWG in the stub port.
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