Load capacity up to 30 lbs * Stylish - Balck finish steel support columns for stereo or surround sound * Side Clamping top plate can adjust width from 5.5 to 11 inches (140mm-279mm) * With a "Lock" mechanism, height adjustable from 26.5 inch to 47 inch ( 673mm - 1193mm ) * cealed wire management, Stability ensured