Turns a single board into a 2-board stand. The QLX-3 is an add-on second tier for QLX stands and for any Quick-Lok single-tier X stand with a QL prefix. A strong, nonslip, lightweight aluminum-alloy locking collar called the Grip-Lok 30 is used to anchor the QLX-3 to the main stand. A QLX-4 mic boom and QLX-5 sheet music holder can also be piggybacked onto the XLX-3. It features 5 height positions, side-to-side adjustment, and 4 tilt positions. Front-to-back tier depth: 17-5/16". Top-to-bottom height positions measured from top of QLX or QL tier to top of QLX-3 tier: 10-5/8", 9-3/8", 8-1/4", 7", 5-7/8". Weight capacity: 75 lb.