Marshall JP55 Adjustable Extend-O-Post Jackpost, 15 ga T x 2 ft 10 in - 4 ft 7 in H, Steel Screw

Use for supporting sagging floors, weak beams and warping stairways. 2-1/4" x 15 gauge prime steel inner tubing. 2-1/2" x 15 gauge prime steel outer tubing. 2-1/4" steel collar. 1" x 6" steel screw. two 4" x 4" x 10 gauge steel plates. 7" turning handle.grooved pin and plain pin. flow coated with red corrosion-resistant paint. packed with instructions. upc symbol on carton. maximum load capacity obtained at lowest extension.