6' 6" To 6' 10", 11 Gauge, M Plate, 3" Adjustable Column, 3.0" O.D., Swivel Plate On Screw End, M Plate On Tube End, Completely Assembled No Loose Parts, Wood Or Steel Beam Mount, Finished With Corrosion Resistant Powder Coating That Exceeds ASTM-B117-85, 2006 ICC & IRC Approved, Max Ext Load 13,345 LB.