OTC's replacement 'tall' jack stand extension tube is an exact replacment extension tube for OTC's 1779B, 12-Ton Capacity, High Profile Jack Stand. Extension tube provides a 33-3/4 inch to 44-1/4 inch height range. Can also be used as an accessory for OTC's 1778B low profile jack stand to turn it into a high profile jack stand, offering increased flexibility in your existing jack stand base. Round stock extension tube features 9 height adjustment settings. Features precision welded, heavy-duty steel tube, steel plate, and steel rod construction. Value is at the core of the OTC tool and equipment portfolio. Whether it's a simple repair or the most complex drivability concern, these award-winning tools universally solve problems faster, and at better value, than any other product line available. Whether it's a specialty tool or unique piece of service equipment, OTC provides top solutions to modern automotive service challenges while increasing technicians' productivity and shop profits.