Product details:

Max ext load 11,350 lbs. Min ext load 18,000 lbs. Additional support for crawl spaces attic. Staircase or decks. Adjusts with 3/4 in. Wrench. O.d. Corrosion resistant inside &and out. Double carriage bolt &and nut (zinc coated) for added safety. Heavy plates suited for wood and steel. Deep dish self-centering plates. Dimension - 5 x 49 x 3 in. Item weight - 20 lbs. - SKU: ZX9TRVAL72188