Review on Enhanced Durability: Rubber 5 9-Inch Loading Driveway Vehicles by Anthony Shields

I have used it 3 times to park my RV near my house. They work great! They have no problem supporting the van and my truck when I run over them. They're not too cool either. If your curb is 6 inches high like mine, they work perfectly. I've only used them a couple of times so not sure about durability but they seem well made. One star is deducted mainly because of the smell. I've had them for over a month now and let me tell you, these things stink! They were outside the whole time and it smelled bad. If you get within 10 feet of them, they smell like a used tire factory. If you buy them, don't, and I repeat, DO NOT store them indoors.