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, Hook End connects to trailer lip. Knife Foot to ground. SET OF 2 RAMPS Skid loader tractor Heavy equipment ramps 9ft x 18in wide 12,000lb capacity . These heavy duty 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. 108 " L x 18" W x 3 1/4 " thick.