Many of today's musicians like things simple and affordable. That's why On Stage offers this Single-X with its classic bullet-nose pull knob. Adjustable rubber arm sleeves can be positioned to fit virtually any keyboard width. Applications: Small-format KeyboardsTubing: 15mm x 30mmWeight Capacity: 130 lbs. Height Adjustment: 27"-38"Base Spread: 11"-31"Special Note: Bolted Construction. Requires assembly; Allen wrench included.