The On Stage music stand is revolutionary, incorporating all the features of the past with the new tripod folding base for the musician on the go. This stand can also fold up and nest together if you are staying in one place. Features & Specifications 13.5' X 18-3/4'. Bookplate, rolled edges for safety and strength. Angle adjustment tension knobs, easy removal from upper shaft Friction locking knobs, 1-3/16' center shaft, adjustments fully extend shafts from 24' (sitting position) to 45' (standing position) and anywhere in between Hi-impact plastic leg housing, friction locking knobs, Leg support straps, non-slip rubber feet, variable spreading legs.