Disregard the rating for durability because I have only had this product installed for a week. This kit is quality for the money. The wiring is a little sparse for 4 gauge, but it's definitely not 8 gauge in a 4 gauge sleeve. Loses one star for ease of use because the ring terminals must be crimped on by the user (which may be difficult if crimpers or a vice are not accessible to the user). Overall, I would recommend this to anyone on a budget or looking for a wiring kit for their first system.