Specification: Material: aluminium alloy Features: Material: Acrylic,Lightweight,fashionable and elegant appearance. Use for under desks,tables and shelves,fit for various kinds of headphones,bags,clothes. Easy to Install: You can install it to the clean bottom surface or the side face of your desk use the adhesive tape. Notes: Manual measurement, please allow slight errors on size. The color may exist a slight difference due to different screen displays.