25 pcs WNI 4 Gauge x 5/16 Pure Copper Battery Welding Cable Lug Connector Ring Terminals

Item as described/solid copper. However, if you have Sky High Audio 4/0, these are half the size of the stranded wire. These would fit Sky High 1/0, maybe 0awg, it would be tight.

As described

Great

Great product. Wont fit real 0 gauge wire though. I had to cut a couple strands off. Very durable and flared ends!

Very quick delivery. High quality just what we needed! Thank you

For solar, emergency power, or your boat, these connectors are perfect and high quality.

Smaller than 0 gauge

Holding up good

They are OK. What more can you say about terminals? They are not Autozone trash. They will support the Amperage required of the wire that can be inserted.

Used for batteries & solar in an RV. Good sturdy lugs.