GAIA I Speaker Isolation FeetPrice includes pack of four isolators. This is enough for 1 Speaker. Gaia I isolators are constructed of machined Stainless Steel and designed to support 220 lbs or less per pack. IsoAcoustics patented design provides a high degree of speaker isolation while resisting lateral movement and oscillations, to maintain alignment with the listening position. Internal reflections from the hard supporting surface are attenuated resulting in greater sound