SMS20BIR heavy-duty microphone stand provides extra stability, extends from 37.5" to 66.5" and is suitable for indoor/outdoor use. The unit features an integral isolation ring in the base that improves stability and reduces vibration. Tubing is manufactured of 7/8" and 1 1/8" dia. cold rolled steel. The unique base design allows stacking of up to six units per stack, making them easy to store and transport. The entire SMS20BIR assembly is finished in non-reflective ebony epoxy.