King Innovation 3-Port Aluminum to Copper Wire Connector (2-Pack)

Used to install a ham radio and a few accessories in my car. Absolutely the best device ever invented!!!

Any time you deal with aluminum and copper, it's nice to have fittings like these. I know they make twist nuts for the same purpose, but I feel these are better. Just a side note, I'm not an electrician.

most of the screws when torqued to 10 in as instructed the screws slip

I bought these to replace wife nuts that were previously installed for exterior lighting. The supposedly waterproof wire nuts failed causing the lights to intermittently work. The Alumiconn connectors have a screw to clamp down on the wire and have a corrosion inhibitor inside the wire slot. Just strip the insulation slid your wires in the slot and tighten the screw. I haven't had any issues since. I would highly recommend this product. They are a little more expensive than wire nuts but it is worth it and they look more professional.

it is an easy alternate to aluminun to copper wiring issues...the two wires never touch therefore no corrosion or loosening of connections

Way too small for what I needed it for