Hercules speaker stand. The Hercules SS400B AutoLock Speaker Stand allows fast height adjustments with the Quik-N-EZ AutoLock, which prevents speakers from sliding down when raised to height. Turn the knob to unlock and lower. A pin provides extra security when loaded. Built-in metal leg housing, lightwieght all-aluminum tubes, and reinforced load-bearing beveled-edge lower shaft. (SS400B)