200PCS Solder Seal Wire Connectors - Sopoby Heat Shrink Solder Butt Connectors - Waterproof Solder Connector Kit Insulated Automotive Electrical Wire Terminals

*EDIT 5/1/2020* So I'm positive these are the best things in the world. I've finally exhausted the majority of the 50 pack and just gladly ordered the 280 and can say that 20-25 for these things is a great deal for how effective these are. For super permanent or less space-starved fixes I still prefer to sit down and solder/wrap normally (like wiring a car stereo) but for just about anything else, even stuff you might come back to, these are a game-changer. You can hold more heat shrink onto the back of the wires since it takes way less heat through the wire to secure these than actual solder where the wire itself can get pretty hot, especially larger more conductive wires that might start closing the heat shrink down the wire prematurely while securing the joint. This actually saved my butt when my headlight wire got caught leaving work (I get off after dark). I had thrown a few in my backpack "just in case" and it actually came up. These are super convenient and get the job done. They're actually pretty solid, too, and feel relatively trustworthy. I like these better than the hard, plastic crimps that don't shrink down, obv, but I mean these things are definitely more solid, and I feel like I've gotten those things tight. For anything worth anything that needs to be permanent, you want to splice, solder, and heat shrink. But when that isn't an option anytime soon, these are by far the most clutch tool to have in your electrical toolbox.

Good product but grossly overpriced

El precio no corresponde

Aun con pistola de calor al maximo la soldadura no se derritió. Solo el plastico se encogió, nada mas.

I love these things! They are one of those things that Idk how I made it without them. I seen someone use them on a car show or YouTube and figured I’d try them. So glad I did because they make wiring a bit easier. All you do is strip the wires and slide this these over them. Then take a heat gun or lighter to heat it up. This melts the solder so it goes over the wires making them water tight and giving it a great connection. Plus the rubber/plastic keeps water out while the solder gives it a great connection. Take my word for it and BUY these! If you do any automotive wiring you will love these. A lot of people don’t solder because it takes time to setup everything ,which I felt the same way before these. These solves those issues and gives you a better stronger bite since they are soldered. You will love these things I guarantee you. I’ve been using these for over a year so I know 1st hand that they last and I know how well they work. I use a lot of the blue ones while wiring which wiring isn’t my favorite thing to do