The Triad-Orbit O1-L is the best long boom arm ever ! It features a ball-swivel mechanism for precise boom placement allowing for infinite adjustability and 360x360x190 degrees of rotation. The comfortable industrial-grade clutches are incredibly strong and the all metal construction makes holding even the heaviest of microphones easy. The built in IO quick-change coupler makes switching out mics a breeze. Just push down on the coupler to release the IO-H1 standard 5/8″ microphone mounting head (3/8″ adapter included) and push it back in to use. This is the most advanced professional long boom arm in world!