Rockford Fosgate Rfk1 1/0 Gauge Amplifier Install Kit
The 1/0 gauge wires feel like they are of high quality and are very flexible, but aside from that the quality is mediocre at best.  The fuse box is made from a flimsy plastic that is designed to be mounted onto the vehicle.  Unfortunately, the plastic is so flimsy I still have no succeeded in figuring out the magic amount of tension on the part of the bolts so that the fuse box doesn't bend by a fraction of a degree because that's all you get.  Apparently the lid of the fuse box requires such a high degree 