Review on Wago Wire Connector Clear Conductor by Matt Watson

With wire nuts, I've found that some connections can loosen over time if the wires are bent slightly, pulled a little, or exposed to heat. This avoids all these problems. They are slightly smaller than a wire nut for 4 comparable 12g wires. Since they have a car body, you can see if the wires are fully seated. You can easily handle this if you are attached to the wires. While it's possible to twist the wires to remove them, I would plan first. Unlike loosening the wire nut and then straightening the wires for reconnection, this will not damage the wire. They are easier to install in a dark or awkward place where you can feel but not see the cord and plug. Although the packaging says "copper wire", the datasheet lists them for aluminum wire if you use All-Plus paste to coat the wire in the connector and protect it from oxidation. Solid conductors from 18AWG to 12AWG are also acceptable. That means a 16AWG stranded wire is also 12AWG. You can mix them in one connection.