@SinlessOnslaught They are pretty slick when you need to connect a new wire to an existing wire and it's not convenient to cut the existing wire to make a splice. They are a fairly permanent solution, as long as they don't get wet. Worth hanging onto if you think you might ever need to do something like that. The also come in red for smaller wire sizes (18 to 22 AWG). I keep a handful of both around.
Scotch Locks! They’re for attaching cables together. The metal bit inside bites into the cable and provides continuity. The plastic clips over so it can’t short out. Used a lot in automotive repair.
