Review on 120PCS Sopoby Heat Shrink Solder Connectors - Waterproof Wire Terminals For Automotive & Marine Electricals by Matt Kucrud

I only used this product once and used the largest connector in the package. The solder just didn’t want to meltcfor some reason like I have seen in videos. On one of them the solder didn’t melt at all but the rubber part melted all the way thru so I had to use another one. Not sure I would buy this product again. You also will need a heat gun to melt the solder. I’m not sure but I don’t think a hair blow dryer will get hot enough