The HERCULES Z-Style Keyboard Stand KS400B has a built-in Auto Lock  system for easy height adjustment and has a one-piece compact folding  design. FEATURES Auto Lock System with Auto Lock Lever adjusts height setting easily and is safe and secure. Locking Pins and adjustable moving arms for easy set up and tear down. The Adjustable Rubber Foot fine tunes height and levels the KS400B for maximum stability. SPECS Height: 605 mm - 930 mm (23.8" - 36.6") Width: 510 mm - 850 mm (20" - 33.5") Weight: 7. 5 kg (16.5 lbs.) Load Capacity: 130 kg (286 lbs.) Folded Size: 705 mm x 605 mm x 175 mm (27.7" x 23.8" x 6.9") Support Depth: 450 mm (17.7)