This pair of Odyssey Speaker Stands with Flat Surface Base supports your speakers with a height adjustment range of 12.5 to 18.25". You can adjust the height freely and use the tension knob to lock the height along the range, and a safety-pin system locks the stand at preset intervals of 12.5, 13.5, 14.75, 16, 17.25, and 18.25" high. Designed to work on a flat surface, these speaker stands weight in at 5.5 lb each.