Lightweight durable and highly portable these music stands transform into a convenient self-contained carrying case. The pull-out extensions provide four-sheet capacity the desk angle is adjustable and a patented locking system ensures maximum stability. The Petersen Music Stand has adjustable height (from 23 inch. to 50 inch.) and can accommodate standard music stand lamps. Perfectly suited for musicians looking for the reliable functionality of a large metal stand but the portability of a collapsible wire one.