VEVOR Screw Jack Post, 4" x 4", 13.2"-18.7" Height Range, 24700 lbs Max Load Capacity, Adjustable Shore Jack, Temporary House Jack Pole for Home Leveling, Lifting Floor Crawlspace Basement Shore Beam Strong Support Easy Height Adjustment Durable Steel Construction User-Friendly Operation Versatile Use Fits Standard 4 x 4 in Wood Post Base/Top Plate Size: 4 x 6 in/101 x 153 mm,Item Model Number: 204A-0110-00-00,Quantity: 1-Pack,Max Load Capacity: 24700 lbs/11203.73 kg,Adjustable Size: 13.2-18.7 in/33.53-47.5 cm,Suitable Wood Post Size: 4 x 4 in/101.6 x 101.6 mm