Valterra A10-0916 Stacker, (Pack of 4) Multi use leveler, jack or tongue wheel support Attached easy to grip handle acts as a transition to the next step for a smooth ramp Convenient self- fastening strap for storage Hold up to 40,000 lbs. gross vehicle weight on a firm level ground or 10,000 lbs. per wheel Measures 8" x 10" x 1-1/2"