Solder Seal Heat Shrink Wire Connectors:
Easy to Use - Makes butt connections a breeze. Electrical work gets cut in half!
You need a good wire stripping tool, and a reliable heat gun or lighter for melting the solder and shrinking the tubing.
Basically, with one step you get a soldered, sealed, and insulated connection. It does take a bit of practice but once you get the hang of it, it's pretty neat.
A total of 125 pcs of welding sealing wire connectors and 275 pcs heat shrinkable tubes are included