The MAC-1 patented, multi-use adapter/clamp secures microphones, horizontal booms, or accessories with standard 5/8"-27 threads. Versatile unit also clamp mounts to 5/8" and 7/8" diameter tubing or to free-standing instruments, keyboards, synthesizers, drum, and percussion instruments with tubing/mounting surface up to 1 1/2-inch in diameter. Unit is equipped with uniquely-engineered three-position, removable hex adapter which allows for convenient vertical or horizontal mounting. Clamp features nylon end cap to prevent marring of tube/surface finish. Fabricated from high-strength extruded aluminum and finished in ebony epoxy. 3 1/2-inch high.