I use them for a slightly different application, but the insulating plastic holds the heat well when soldering (if you know what you're doing). The same is not true of all brands of forks that come in this style. All 6 connectors in the kit are compliant. (They all fit correctly on the 3.5mm jack). The addition of heat shrink tubing, solder, and tweezers is a nice touch. This will likely be a problem for those who have no soldering experience. The 6 ports are of pretty good quality for this price - a very good deal. I just wish they came in a 6 pack in black or silver instead of all the colors of the rainbow. Other than that, they're pretty good.
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