One pair of jack stands. Patented safety pin design adds extra security when working beneath vehicle. Lift Capacity (tons): 12, Min. Lift Height (in.): 18 1/16, Max. Lift Height (in.): 28 9/32, Double Locking: Yes, Base L x W (in.): 10 1/4 x 12 Conforms to ANSI/ASME safety standards