Product Description
SCREW JACK: The Ellis 4×4 Screw Jack is an extremely versatile product that will allow you to create an adjustable support of any length with your own 4×4 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.
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