Received this from an Amazon store deal. Came in great shape and works as advertised! Much sturdier than two pieces of wood or special wheel chocks I've used before. I like how it locks on either side of the tire and once tightened cannot be loosened by trailer rocking or other normal movement. I also expect it to be smaller and easier to pack compared to two triangular wedges, and I suspect it will be harder to "remove" or "steal" once tightened! Combined with a BAL leveling on the low side wheel I expect this will be the mainstay of how we pack our trailer going forward!