K&M 21300-009-55 is a high quality steel speaker stand with zinc die-cast clamps for professional use. Infinitely variable height adjustment with a hand crank and push button system which prevents an uncontrolled reverse motion. There is an additional locking screw for extra safety. Extension tube diameter 35 mm, suitable for speakers and lighting crossbars with an integrated M10 thread connector. Features: Push-button system and hand crank avoid uncontrolled reverse motion. Locking screw...