Hi-Lift Jack 4xRac Mount Kit , 4X400 It may be installed on any flat surface 2-1/2 wide or more;Kit includes 2 mounting brackets, 2 mounting bracket caps, 2 wing nuts, 8 hex head cap screws, 8 nyloc nuts and 1 handle strap Hi-Lift Jack Hi-Lift Jack 4xRac Mount Kit - 4X400 4X400 Trail Jack Accessories