Bought two pairs of these MaxTrax Xtreme traction boards about 4 years ago. Have them mounted to our overland setup - Ram 3500 + bed rack & rooftop tent. The truck is pretty heavy due the Diesel engine so needed some boards that wouldn't just shatter under the weight of the truck. The Xtreme boards definately have a heavy duty feel and are FAR superior to the cheaper plastic knockoffs that where trash after just one use. The replaceable metal lugs were also a major selling point. They have held up so far with several recoveries plus I use them as leveling blocks.BE AWARE - The XTREME boards do NOT work with the MKII specific mounting pins. I was only able to find the ""Xtreme"" specific mounting pins directly from MaxTrax USA. They also offer a combo mounting pin set that allows you to stack two of the MKII boards along with a pair of XTREMEs. Overall happy with the boards & mounting pins - just overpriced in my opinion.