Music Stand:Height support adjustment (between 29-54 inches) for seated and standing used; Innovative design supports switching between music stand and book stand. Music Stand For Sheet Music: The sturdy 13.6-inch diameter tripod base with rubber feet easily holds up to 13 LB of weight; the 1.6-inch deep tray is large enough to hold any type of sheet music or book. Book stand:Music Stand*1, Book Stand*1, 180° Adjustable Clip on Light, Carrying Case*1, Sheet Music Clip*1. With music stand light, easily covers two pages of sheet music. The stable light soure, protects your eyesight and reduces eye strain. Music Stand For Sheet Music: Innovative specially designed knobs to ensure the stability of the bracket while not scratching the bracket; music tray can be rotated 180 degrees for maximum flexibility; laptop or projector placed on it as well as all types of guitar, violin, and other musical instrument players. Music Stand Portable: The whole set of brackets can be put inside our equipped handbag, very convenient.