The MAXSA Innovations Curb Ramp is a portable, heavy-duty way to get vehicles, carts, tractors, or other wheeled devices over a curb or step. Use it to mount curbs or steps up to 5.5 in. high. And it's strong enough to drive trucks over with a weight capacity of up to 10,000 lbs.! Each unit is 23 in. wide by 13 in. deep and weighs only 7 lbs. This curb ramp is ideal for those with mobility issues, movers, or delivery personnel. There are mounting holes on sides and bottom plus the holes allow multiple units to be bolted together..