Large 15" x 9.5" base provides 142 sq. in. of support for use on soft/loose surfaces, Will not sink into hot/soft asphalt or loose gravel work surfaces like standard jack stands, Extremely stable and strong design provides safe working space, Provides 12" working height using .105-inch thick steel construction and a 2-inch wide cross bar, Features gloss black powder coat for protection and sold in a set of four with 3,000 lb capacity per jack stand.