Bolted construction provides durability for reliable performance
          
                  
          
                        
            Double-braced frame and heavy-duty square tubing for dependable keyboard support
          
                  
          
                        
            Efficient pull knob releases clutch and springs back to lock in height and width adjustments
          
                  
          
                        
            Nonslip arm sleeves adjust to keyboard width to increase stability and prevent scratches