Our best quick-disconnect terminals for preventing wire pullout and loose connections. A combination of crimping, heat shrink, and solder makes the wire extra rigid and secure. First, squeeze the barrel onto the wire so it stays put when tugged, vibrated, or under tension for long periods. (Use a crimping tool to avoid a damaged barrel and loose connection.) When you apply heat, the plastic seals and grips the stranded wire while the enclosed solder melts it into a solid, rigid wire that's even tougher to twist or bend. These terminals pair with other quick-disconnect terminals, so you can pop them apart whenever you need to break a connection.