Tough, high quality rubber ramps, at a good price, work very well for their intended use. One of the few ramps makers that offered a 6" height. Some things to note, since most curbs don't have an absolute 90 degree angle, there will be a gap between ramp edge and curb edge but it is small and won't cause a problem. Ramps are very smelly, store them outside till you're ready to use them. Concrete anchors that came with them are just ok, 2 of the 8 failed to properly tighten up. Would definitely buy again but maybe use Redhead anchors.