I tried a few plastic adapters that were too flimsy but found this one. I read the reviews on solder joints so I reinforced them a bit with some extra solder (especially on the top edge where the inner and outer halves come together) just to be sure, installed them, hit the switch and then "puff !", I stopped being Electro Man, Key Keeper and Faith Defender, I became Superman (because they all worked. I guess it's little things. >SEIGH<.). solder, they will be VERY hot (don't touchβ¦