Kuject 400PCS Solder Seal Wire Connectors, 26-8 AWG Self-Solder Heat Shrink Butt Connector Solder Waterproof Insulated Electrical Butt Splice Wire Terminals for Automotive Boat Truck

Thes are awesome for me with my pontoon boat they are totally water proof and the solder melts the wires togetherI still use shrink wrap to cover them even tho you don't need to I just think it looks clean that way

These heat activated solder shrink connectors work well, making secure butt connections.Please note that the proper amount of heat must be applied to activate/melt the solder. A heat gun is essential to properly use these connectors. Please also be aware hair dryer should not be used as a heating device, as it will not provide sufficient heat to melt the encapsulated solder.Once cooled, the connection is permanent and quite strong.I highly recommend these connectors.

The product is great. Amazon delivered it to the wrong unit in my mobile home community. Luckily the person at the wrong addresstook it to the office instead of keeping it.

Works good. I’ve done a few wiring jobs with these connectors and so far everything has held up after a few weeks. It does take a fair amount of heat to get the metal to melt, I had a one or two where the plastic melted before the metal did, that was a pain to have to remove.

These are incredible. I have used these now for multiple applications, from a car to sprinkler wires to vending machines. Just carry a heat gun and short extension cord for most places and you're set. You do strip the wires farther than you usually would with a crimp. The only thing I will say somewhat as a warning is that they work way better with stranded wire than solid wire. I have had a couple instances where solid wire pokes a hole in the coupler and I have to start over. Other than that, these are easy to use, guarantee a solid connection, go waterproof, and make it so that the connection isn't a massive piece of plastic that you will be able to see even under shrinkwrap. If you cover the wire with shrinkwrap afterwards, you won't even notice that there is a splice in the wire

Works as good as described

These things are so cool. Best consistent butt connection I've ever been able to make. I use a heat gun with the narrow tip. You can burn through them if you're not careful. There is a fine line between hot enough to melt the solder ring and not melt the heat shrink. Once you get the hang of it you can do it every time. I lost his the little colored ring grips the wire too. You can kinda hit that part first to help hold the wire then hold it on the solder ring. I always do another layer of heat shrink just in case I burn through the one it's made of. I will definitely buy more of these. I hope they have different types of connectors in this same style. I do a lot of diy vehicle electrical work, these are my favorite now

I tried 2 different heat gun and a small torch but none of them worked. The solder did melt but the connection didn't bond. When I cut the connector apart the wires basically fell apart. I also tried to use some flux on the wires but it didn't help. Would not recommend!!