ok first of all my kit had a 50amp fuse not 150, the wire is more like an tsumami 8 gauge kit the wire rms is 500, max 1000 peak wattage if you amp has more than 500rms go with a tsunami kit they have the best you can get

Why are some wires so darn expensive? Answer, quality. The quality on this kit is not very good. The power cables are all jacket and not much wire, same with the speaker wire. I actually threw away the speaker wire because there were only a few strands of copper in them. Do not buy this kit if you are putting in a system over 200 watts. If you are on a budget and the rest of your system is low end then go ahead and buy this kit.