STR015 MUSIC STAND 小乐谱架 Angle adjustment button; quick height adjustment 案台角度调节按钮;快速调节高度 Height Adjustment Range/调节高度: 460- 1360mm Weight/重量: 1kg Tube Diameters/管壁: 13mm(above)-16mm(center)- 19mm(under)- 16mm(leg)