Adjustable jack base is also called adjustable screw jack, scaffold jack, leveling jack, base jack or jack base, etc. It consists of a base plate, a threaded tube and a nut. The surface treatments include hot dip galvanized and electric galvanized. Andjustable base jack is used as the foundation for the scaffold. Its height is adjustable, so it can adapt to uneven construction surfaces and ensures the entire scaffolding system remains level. Adjustable base jack is compatible with all the systems such as Ringlock System, Kwikstage System, Cuplock System and Frame System.