HERCULES EZ-LOK SINGLE X-KEYBOARD STAND The HERCULES Single X Keyboard Stand KS110B features the patented EZ-LOK, 5 height settings, and heavy duty steel construction. Features: The EZ-LOK System automatically locks the stand in place. The Adjustable Rubber Foot provides stability on uneven floors. Round and square 25.4 mm (1″) steel tubing for strength and stability.