Ellis Mfg. Co. 4x4 Screw Jack - Steel Adjustable Support - Safe Load Capacity (15,000 lbs) - Painted Finish

SCREW JACK: The Ellis 4x4 Screw Jack is an extremely versatile product that will allow you to create an adjustable support of any length with your own 4x4 lumber. This product is designed to provide structural support in residential, commercial, trench, and collapse rescue shoring applications.Brand:ELLIS MFG|Manufacturer Part Number:"SJ-4"|Manufacturer:ELLIS MFG. CO.