This architectural drawing is Adjustable U head design in detail AutoCAD drawing, dwg file, CAD file. U-Heads are made to be used with scaffolding that can be adjusted. A U-primary Head's purpose is to firmly secure wooden beams in place. The U-Heads Jack that we provide is of the highest caliber, and it is finished with a pure zinc plating to enhance brightness. For more details and information download the drawing file.