Join the thousands of satisfied carpenters, cabinet installers and handymen already using the T-JAK Support System! The lightweight, multi-purpose tool has been designed to ease the installation of kitchen cabinets, dry wall ceilings, door and window headers, crown molding, ridge rafters, tub surrounds and many other applications. Slides from 53" to 84" through the use of a quick release knob allowing you to support objects weighing up to 400 pounds! By simply tilting the quick release knob, the threaded knob can be adjusted to the desired supporting height. The quick release knob will automatically lock into place and engage thread. Turn quick release knob for final adjustment. By using the 1-foot, 2-foot or 3-foot extensions, those hard to reach jobs become much easier! Tool of Choice by the "Cabinet Installers of America". Tested and Approved by "The Handyman Club of America". It is being used regularly on "This Old House".... [Detail]