GoJak Model G4520 EXTREMELY DURABLE - All steel construction and high level of craftsmanship EASY TO USE - Double ball bearing nylon casters make moving vehicle effortless FAST & EFFICIENT - Mechanical design and quality components make jacking fast and easy with less strokes LOW PROFILE - Rated for up to 4500 lbs (1125 lbs per wheel) and up to 20" wide tires AMERICAN MADE - Designed, Tested, Manufactured, and Proven in the USA since 1984