Among the best-selling speaker stands in history! The TS-90B features the innovative TeleLock locking system, which assists in raising and lowering the stand while the speaker is on it. The TS-90B adjusts to 6' 7". The adjusting collar allows you to easily raise, lower, and lock your speakers or lighting Default — just click the ring to the "Raise" or "Lower" setting, then easily guide the speaker up and down. These sturdy stands won't let you (or your speakers) down, as it can easily support up to 150 lbs.