Quik Lok Z-71BK Keyboard stands and displays Quik Lok, the originator of the "Z" stand, proudly introduces, as part of its evolution, "Zenith", the new Z-71 foldable "Z" structure, patent-pending design that sets up and folds down in literally 10 seconds Height adjustment is a snap because of a spring-loaded, dual pin system that instantly releases and locks the tiers into the desired height position This stand is great for tall keyboard players because of Z-71's maximum height of 39" There is absolutely no sacrifice for strength or stability because of this design. In fact, constructed with computer-welded, 14-gauge steel, this is one of the sturdiest stands Quik-Lok has ever made Fully adjustable second tier add-on available, the Z-2. Converts the Z-71 to a double tier stand