Check the listing for details. On-Stage Classic Single-X Keyboard Stand. Condition: New. Listed at 29.95 USD. The On-Stage KS7190 Keyboard Stand is perfect for musicians who just want things strong, simple and affordable. On-Stage continues to offer this basic Single-X stand. And it's tough, too, holding up to 130 lbs. The adjustable rubber arm sleeves can be positioned to fit virtually any keyboard width. Height is adjustable from 27 to 38 inches. 5-position disk clutch w/ bullet nose pull knob. 1X1” Tubing.