After a full season of use, I am surprised about how well they withstood the beating they got. We used two for our popup (about 1800lbs and 17 feet long) for storage and while on site camping. We accidentally forgot one was still in place when we tried to take away and we were prevented from moving forward. I was happy to know it stopped us and could take the extra force. No signs of cracking or wear and tear. If they do decide to break down, I will absolutely replace them with these again!