Sturdy Construction: Four steel support columns feature a scratch resistant, powder coated black finish. The result is a rigid platform with a satin finish that resists scratches and scuffs and cleans easily. Each stand is 18' tall and is acoustically inert. Four soft rubberized top pads are supplied to protect your speaker from scratches and to further isolate your speaker from unwanted acoustic vibrations. Rectangular Columns: The four support columns are hollow and can be filled with sand or steel shot for the ultimate in vibration dampening. This will further reduce any unwanted vibrations or resonances that can color the sound and reduce fidelity. Adjustable Spikes: Each stand includes adjustable floor spikes to pierce through the carpet to isolate the stand and your speaker from floor vibrations and resonances. Ideal pedestal for the home theater speakers in your entertainment system.