Four Brand New 24" x 1 3/8" Galvanized Screw Jack with Base Plate, 18" adjustable Thread * 18" adjustable Thread, will fit on 1.69" and 1.625" OD Scaffolding * The Screw Jack Base Plate with the 18" stem is adjustable in height * This 24" Screw Jack with Base Plate with 18" Adjustable Thread will help you set your scaffold level * IF YOU HAVE ANY QUESTIONS PLEASE CLICK ON (CBM1290) then RETURNS.