Tower Clamped Size Available: 1 4/5", 1 9/10", 2", 2 1/10", 2 1/2. Bat Rack Back Plate, Polished Billet Aluminum, Swivel mount that can be adjusted nearly 360 degrees. Fits both vertical and horizontal tower bars at virtually any angle Bungee cord for secure board fit. Soft rubber inserts for secure tight board protection Secures 2 boards. Gets your boards off your floor.