KnuckleHead Lite Pipe Supports are designed for a wide variety of roof support applications for single 1.315 inch outside diameter pipe or up to two .840 inch outside diameter pipes. Lite Pipe supports include a containment cap. The KnuckleHead line is molded with glass-reinforced nylon which has aluminum like properties. Glass-reinforced nylon is tough, weatherproof, UV stable, and impervious to freeze-thaw cycles. Each KnuckleHead can support up to 600 pounds of weight. The standard universal base is 7 inches in diameter, the optional Big Base is 12 inches in diameter and is recommended in free-standing applications over 12" in height. The Lite Pipe KnuckleHead is height adjustable from 2-3 inches in total height by rotating the head. KnuckleHead extensions are available for applications exceeding this height. The KnuckleHead line can free free-standing or mechanically attached using Green Link Adhesive/Sealant and/or fasteners.