The only boom that was designed to be mounted on any tubular tower. This boom is rock solid and can be stowed by pulling three quick release pins and detaching the cable system from the bow. It can also be used to train new wakeboarders at slower speeds while an instructor directs them on what to do. (W206 fits 1⅞” and 2” towers / W207 fits 2¼” – 2½” towers / W208 – fits Cage Tower W2922 / W209 – fits 2⅞” and 3” towers)