ProBoom® Deluxe Triple Mic Arm with Riser - Undoubtedly, the world?s most popular Mic boom in the radio broadcast industry. Our famous Deluxe Ultraflex® arms provide unequalled holding power and ?squeak-free? operation while ?on the air?. Provided with a 5/8-27 threaded mounting stud to hold virtually any microphone in a stable position. This is our Round Table Configuration, with (3) 29" Mic Arms, and our 12" Triple Mic Arm Riser. Smooth, quiet operation leaves our competition in the dust!