I own a small sound and lighting company and have been searching for cable protectors when doing festivals cause people and kids are horrible about tripping over my snake (Ethernet cable) and electrical cord to the sound tent. I purchased these to help control that and reading the description I was a little leary of the product as i figured it would just be some lightweight product that would not last one show. So, when they came in, my opinion was completely changed. this 3 pack is 42lbs (says the shipping label) and i believe it. Solid HARD Rubber and these things are not going to fall apart. I think these things will end up outlasting me. I totally believe a car or tractor could drive over these and not be hurt or damage my cables. I did only give it a 4 star rating BECAUSE the long metal pin that holds the cover slides out very easy. I fixed this by putting hot glue on each side of the hole and it seems to be doing great. I ordered 4 more packs of these and trying to figure out how i can get 5 more packs. I have a show this weekend and i will try to get some pictures and post of them in use.