Flatstoppers® are made with the company's patented super-lightweight 100% solid construction technique – making them highly durable, virtually indestructible, and providing a 6,000 lb. vehicle weight capacity. FlatStoppers' textured coating prevents sliding across floors - including epoxy-coated floors. FlatStoppers® won't scratch or otherwise damage floors, and won't rust. Available in 10 or 14 inch widths.