Review on Upgrade Your Car Audio System With InstallGear 4 Gauge Amp Wiring Kit For Crystal Clear Sound by Alexis Guiney

Kit comes with everything you need for your average install. If you will be running multiple amps then you will also need a distribution block. I would recommend one for power and one for ground. You will also need to buy a few extra feet of quality ground wire (if running multiple amps, you don't need to do this with just a single amp). The wire is flexible and of good quality. The fuse holder includes a sufficiently sized fuse (I believe it was 120A) for running anything you would want to run off a 4ga wire. The OFC kit is worth the extra cost over cheap copper clad aluminum wire kits that don't flow power nearly as well.