I bought an Athena Micra 6 system and have one rear speaker that needs more than the 25 feet of cable that it came with. I have an extra length of some 16 gauge or whatever kicking around. If I twist ...

You twist two wires together, stick them in, and twist the connector until it's hand-tight, thus connecting the two wires. The big difference is that these are stuffed with a dielectric sealant of ...