Heavy-duty steel construction in black finish; Supports weight up to 30 lbs * The top plate can pan 180 degrees and tilt +/-10 degrees for level adjustment * The cable management system in place to hide all those messy speaker wires * Height adjustable from 26.5 inch to 47 inch ( 673mm - 1193mm ); Side Clamping top plate can adjust width from 5.5 to 11 inches (140mm-279mm) * Universal Compatibility with the majority of leading brands of surround loudspeakers, including Acoustic Energy, Sony, Bose and many others