Strong, light and easy to raise. Allows fast height adjustments with the Quick-and-EZ AutoLock, Which prevents speakers from sliding down when raised to height. A pin provides extra security when loaded. Built-in metal leg housing. Lightweight all-aluminum tubes, and reinforced load-bearing beveled-edge lower shaft. Quick-and-EZ AutoLock height adjustment. Height: 46. 1"-82. 7". Base diameter 59". Load capacity 100 lbs. Accepts flanges: 1-3/8, 1-1/2".