Purchased for a craft project. Love the assortment. Had to cut a hole in a watering can to thread the lights through. I didn't want the metal cutting the light wire. Time will tell but works out great for now.
Pros
Worked great for my application. Should protect battery cables from chaffing at firewall pass through.
Cons
Some of the rubber grommets may be too small or too large for the intended application, making it difficult to find the right fit in the kit