These are everything they said they would be. They are strong, they are wide, and they are heavy. They work well. They are made of hard rubber, and I chose these because I saw that some of the plastic ramps broke with just one or two uses. We've been using these a few weeks, and they show no sign of wear and tear. I rented a hammer drill from the big box store, and the bolts that were included with these ramps went in as easy as butter - within seconds. This brand of ramps comes in a variety of heights - so make sure to choose the height that will work for your needs.