VERTIGO is a one-piece, all steel threaded fastening system for suspending steel threaded rod vertically overhead inch pipe hanging, fire protection, electrical conduit and cable-tray applications. VERTIGO can be inchstalled inch a variety of base materials inchcluding steel bar joists and beams, Widthood frame columns and beams, as Widthell as concrete ceilings, beams and columns, Rod diameter: 3/8IN, Size: 3/8 X 2 1/2IN, Material: Steel