"Guardian heavy duty industrial rubber curb ramps provide access for cars, trucks, RV's, small and large equipment, to traverse curbs up to 7.8"" high. Made with high-density thermoplastic rubber, the curb ramp works great in all weather conditions, featuring a ridged surface for added grip and a reflective yellow triangle pattern for increased visibility under low-lit conditions. Safely supports up to 60,000 lbs (30 tons) of vehicle weight per ramp."