This is OFC wire. Don't let the silver plating on the copper fool you. I was trying to tin the wires for installation since I didn't have any ferrules and the wire was not warming up with my soldering iron. I figured it just isn't powerful enough for 8 gauge wire. So I pulled out my torch which did work, but it actually melted off some of the tinning and you can see the exposed copper strands underneath.The fuse block is a quality piece and well built. The length of the wires was sufficient to wire an amp behind the back seat of an F150 supercrew. That's a pretty long run. The speaker wire was nice quality stuff too. They give you all the connectors you will need to wire a single amp.One strange issue that I did run into was that the nice braided end of the cable had a ring connector on it which was nice, but you can't use that on the fuse block. I had to cut that off about a foot from the end, strip both ends of the cable to insert into the fuse block and then connect the ring terminal to the battery. I think it would be a lot nicer if they included a short braided piece with the ring connector and the long cable with the braiding with a just straight end with a ferrule on it. The braided section was long enough to make it all the way past the firewall and into the cab. Very nice.I would buy this kit again if needed. I don't think you will find a better quality kit for the price. If you do this often and buy bulk cable and connectors obviously you don't need this, but for a one time installation for a DIYer, it was perfect.