Jeemiter Insulated Inline Splice Connector 2/0-6 Gauge Wire Connectors Aluminum to Copper Wire Connectors 7/32" Slotted Allen Hex Insulated Multi-Cable Connector - 4 Pack

Very good, simple product that works. I was grandfathered into three wire 220V #2 gage underground wiring going to detached garage and used these to connect #6 gage copper wire inside an exterior splice box on the side of the building. Worked very well.

Very durable and solid connector. I line the ease of use and cover for safety for a major 50amp line. But expensive but well worth it

Purchased to inline couple 2/0 ROMEX to 6/0 ROMEX to feed a 50amp outlet. Worked perfectly.

These Jeemiter Insulated Inline Splice Connectors are rated for both aluminum, (4 AWG up to 2/0), and copper conductors (6 AWG up to 2/0). As shown in the photo, these ratings are conveniently located on the included screw plugs. They have a UL label attached. Devices of this type are one of easiest ways to safely join Cu and Al, and/or to splice stranded wire with stranded or solid conductors. They are pre-insulated with PVC and pre-filled with oxide inhibitor (see picture). They conveniently come with a 7/32” hex wrench good for initial assembly, but always finish by torquing them to the manufacturer’s specs.These connectors look and feel just like, and seem to provide the benefits of, the name brands, but for a lot less.