The Hercules DS551B Sousaphone Stand’s locking pins and center knob allow for compact folding. For quick and easy setups, flip the upper post onto the base and tighten the center screw. Then pull down on the 2 support arms until the pins lock into place. The all-in-one design folds compactly. Also features a folding yoke that sets up and packs down in seconds using a secure pin. The yoke is covered with Specially Formulated Foam (SFF) rubber to protect your instrument’s finish. Heavy-duty tubing and structure plus tripod legs for added stability.