"When loading motorcycles, landscaping equipment or simply hand-loading your trailer, the 57"" W Bi-Fold Aluminum Trailer Ramp provides an easy incline with maximum grip. Manufactured from high-strength, lightweight aluminum, this trailer ramp has a punch plate traction surface that allows debris and precipitation to pass through yet grips tires and soles. It install easily on any flat surface, and is designed to be used with 5' wide trailers. With a 5,000 lb. per axle weight capacity, it's suitable for heavy equipment as well as lighter loads. This ramp folds up vertically when not in use and aluminum strut rods and bungee latches keep both folded sections firmly in place. For longer loads, the ramp can be folded flat directly on the trailer deck to allow the load to extend past the rear of the trailer."