• More convenient than the old way: no need to crimp, just use a heat gun then you can finish the connection.
  • Cost effective Butt Connectors: 120PCS, include 40 Red, 40 Blue, 30 White, 10 Yellow.
  • Easy to identify: Specific color for Specific size, easy to pick up for use.
  • Waterproof and Insulated: widely used for marine and automobile.
  • High Quality - Comply with all relevant European standards; Shrinking ratio: 2:1

I've worked on electronics for years - I have soldered / heatshrinked wires of all sizes - I have used different crimp connectors over the years as well. I did not expect these would work as well as they show on the videos. I was wrong. They work very well. I had the best results using a heat gun. I tried a lighter. This worked somewhat. Or mostly? But I was not happy with how it looked and some of the solder looked to have not melted. I then tried a torch. I got it too hot and it melted (my fault). I started from scratch with a heat gun (at about 650 F). It took longer than I expected at first, but the finished product was near perfect and way less effort than any other means of joining wires like this. I have to (shockingly) admit this is a great product. I will keep these around from now on!

Purchase these connectors to repair my motorcycle. Well designed and made connectors. Comes with a range of sizes to fit various applications. 120 pieces can be used for a long time. Overall a 5-star product.

I was initially skeptical but hopeful when I ordered this. My wife ran over the lawnmower cord and the way this cord is attached, you must repair and not replace. When I received this I quickly did a test sample. I used a BBQ lighter, not a heat gun, I pushed the wires into each other and added a bit of flux to make things flow easily. Anytime you solder you should add flux. It's cheap and flux works very well. I started at the ends to stabilize the wire. Then I worked the center to join the wires. I kept heating the center until the solder changed to a darker color. Once done I finished the rest of the connector. I did not touch the flame to the plastic sleve except where you solder. That area got some carbon buildup but wiped off easily. This is a solid connection. I've included a picture of my test piece. The only reason I touched the center area was to just get this as hot as possible. So the solder melted but the shrink casing did not. Gosh I wish I invented this stuff.

Well my first couple of tries didn’t go well but I had never used any before once I got through the learning curve on how to heat them and use alligator clips to hold them instead of your fingers then they were awesome very clean look and I can’t believe how strong the are💪 I will never use a crimp fitting again. I can’t wait to see if you guys come out with ones with different ends on them for other applications what a great idea thank you John Fishburn

***** updates after receiving a new marine grade kit I am much happier with quality of new product Def consider them over the overpriced west marine style Don't bother. Spend the money on legit sealing crimps. The metal bands are junk and slip out the wires with ease. Non heat shrink rated. Stop considering these an option and buy the upgrades

WHY DIDN'T I KNOW ABOUT THIS PRODUCT YEARS AGO... You will love these connectors . I found out after a couple of times what i think helps them work a little better ids after you put your wires in the connectors gently crimp down on the connection then apply your heat. Go easy with the heat and you will get a great connection. What i think is also great is that they shrink tho the wire and are water proof.. WHAT A GREAT PRODUCT..

I just rewired the lights on my trailer and used these for all the connections. I used them two different ways. Where I could, I slid the connector on the wire, soldered it with a soldering iron and then moved the connector into place and used the heat gun. On a few of the connections it wasn't convenient to pre-solder so I just used the connector and heat gun for the only connection. I payed close attention to the solder and it seemed to flow well and create a strong joint. I really liked them for wires that are exposed to the elements. So far so good, I will update this review if I start having problems with any of the connections.

These connectors were easy to use when replacing some broken plugs. Have a Toro electric start mower that the charging plug was pulled apart. use this connectors to replace the plug on the mower and the charger. Using a heat gun to melt the solder and heat shrink worked great.

Worked great for fixing a long mini USB cord I have running to one of my outside cameras. Was easy to use and held very well. Much easier than crimps I tried to use before!

I needed to rewire a car stereo amplifier that I had previously use screw clips. I was worried that I was going to need to spend all day at a bench soldering around 30 connections together with heat shrink. These things are so awesome because it includes everything all in one. I was able to rewire the whole amplifier in less than 30 minutes with the only tools needed were wire strippers and a lighter. It's awesome that the casing is clear so that you can see when the solder melts into the connection. So far it's been about 6 months and my amplifier is still working flawlessly so the connections are holding up fine. For future wiring jobs I will consider using these first for how convenient they are.