Abstract: A supporting bracket has a base and a positioning column. The base is mounted on a bottom bracket to form a stand. The positioning column is attached to the base and has a first positioning piece and a second positioning piece. The first positioning piece is formed on the base and has a first inclined surface and an inclined slot. The second positioning piece is mounted slidably on the first positioning piece and has a second inclined surface and a slide mounted slidably in the inclined slot. Sliding the second positioning piece on the first positioning piece changes an outer diameter of the positioning column so that the positioning column may be fitted into mounting holes of different devices such as audio speakers.

Abstract: A supporting bracket has a base and a positioning column. The base is mounted on a bottom bracket to form a stand. The positioning column is attached to base and has a first positioning piece and a second positioning piece. The first positioning piece us formed on the base and has a first inclined surface and an inclined slot. The second positioning piece is mounted slidably on the first positioning piece and has a second inclined surface and a slide mounted slidably in the inclined slot. Sliding the second positioning piece on the first positioning piece changes an outer diameter of the positioning column so that the positioning column may be fitted into mounting holes of different devices such as audio speakers.

Abstract: A wind instrument stand has an upper pivot slide, a lower pivot bracket, multiple legs, multiple links and a post assembly. The legs are connected pivotally to the upper pivot slide. Each link is connected pivotally between the lower pivot bracket a corresponding leg. The post is mounted slidably through the upper pivot slide and securely on the lower pivot bracket. The wind instrument stand may be folded into a compact configuration and be inserted into an opening of a wind instrument to facilitate the storage and carrying of the wind instrument and stand.