Built to support the heaviest flexshaft motors. All components are manufactured from solid, chrome-plated steel. Three steel rods are screwed into each other to form the support column which, in turn, screws into a heavy steel c-style clamp that accommodates bench tops up to 3 1/8" thick. The retaining hook at the top of the hanger is 27" above your bench-top when assembled. You can suspend your motor at a lower height by removing one of the 3 steel rods that form the support column. Provided unassembled.