Aluminum construction is lighter weight than traditional steel Hook attachment ends, hook to car hauler trailer decks etc Aluminum Trailer Loading Ramps for Cars, Pickup Trucks, Skid loader tractor Heavy equipment ramps Hook End connects to trailer lip. Knife Foot to ground. SET OF 2 RAMPS These heavy duty lightweight aluminum ramps are exactly what you need to load farm equipment, trucks ,cars, etc. Car haulers these are the ramps you need. Hook end attachment hooks to trailer. Serrated cross rungs 4" apart for maximum traction in any weather condition. Rated at 12,000lbs per axle. 96" L x 18" W x 3 1/4 " thick.