The SANUS Ultimate Series UF34 is a 34-inch stand for medium bookshelf speakers up to 25 lbs. Its stable triangular base is made of minerals, resins and glass for superior resonance damping. Three textured gray steel pillars support a 6 by 6.5-inch steel top plate with brass speaker isolation studs for a stable, non-slip surface. Pillars can be filled with shot for added mass and have damping rings at both ends to effectively isolate vibrations. Base includes carpet spikes and pads for use on any floor surface. This product is sold as a pair.