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https://www.sweetwater.com/store/detail/ZStd--on-stage-stands-ks7350-pro-heavy-duty-z-stand
Pro Heavy-duty Folding-Z Keyboard Stand
Think VERSATILITY! This compact stand can hold 375 lbs., allows for independent height or width adjustments, and folds for easy storage. The unique Z-frame allows playing from either side and can be broken down and locked together for transport. This model can hold 49-key keyboards in the compact position and up to 88-key keyboards at its maximum width.
Pro Heavy-duty Folding-Z Keyboard Stand Features:
Applications: DJ, Mixer, and Keyboards
Structural Tubing: 1"x 2"
Center Box Tubing: 3/4"
Weight Capacity: 375 lbs.
Height Adjustment: 24"-38"
Bottom rail: 18"
Top rail: 16-7/8"
Telescoping Width Adjustment: 21"-36"
Construction: All-welded