The KS7290 is designed with strength and comfort in mind. This pro-level model features the heaviest tubing we have in our arsenal and is built with an ergonomic trigger and a solid-steel spring-loaded deadbolt. Applications: Large-format keyboards; Weight Capacity: 275 lbs. Height Adj.: 27”-38”; Base Spread: 12”-32”; Arm Depth: 13.75"; Tubing: 30mm Construction: Welded; Colour: Black Powder Coat Finish• Patented ERGO-LOK™system features an ergonomic trigger, an internal rod mechanism and a solid-steel springloaded deadbolt assembly• Adjustable rubber arm sleeves can be positioned to fit virtually any keyboard width• 30mm Square tubing• Non-slip rubber end caps