400pcs Solder connectors with Heat Shrink Waterproof Electrical Docking Joints for Sealing Wire Connections. DIY Electrical Connection Wiring and solderless Terminal Wire Connection

Easy to use and looks great. God quality and function, time will tell how it holds up, melts easily but we will see how the adhesive lasts. Good amount of sizes for all your connections. Great value and quality

Here is a lifetime supply of heat shrink tubing with solder inside. My first splice, I was repairing some bad connections in a car. These worked perfectly, no flux on wires is needed. Just strip and insert wires to overlap under the solder ring, heat with heat gun until you see the solder sweat to the wire and long enough to shrink the length of the tube. Great product.

These solder butte connectors work very well once melted the wires are extremely unlikely to come apart. They are quite easy to use and the waterproof of the joint is a great plus. The size of the connectors allow for most normal wires size wires to be joined. The shrink about double what they are supposed to do that was great..

Easy to use, makes connections easy and clean

Worked well for me been using them for year now and out of 1/4 of the box only 1 seemed to give me problems so not too bad ration yet.Will definitely buy again.

Plenty of what i needed and nothing i dont. Solder in these takes longer to melt than ones i got at local stores, but appears to flow better and make a more solid connection

The wire connection was great. The shrinkage was easy to do. Very easy to use the connections and the sizes were perfect for all wire needs. Wish it had more larger in package than so many tiny ones. I am not sure how the solder melted but seemed to hold. Didn’t break any open to verify

I bought these for my husband because he needed new ones. He used them on the wiring harnesses of a few radios he was installing. They worked just like they were supposed to. They were a few duds but not enough for it to make a difference. When one didn't work it was easy to take off and redo. We would definitely recommend these.