Versatile 15cm (5.9”) friction arm kit with Anti-rotation attachment on one end, ¼’’ attachment on the other end and Nano Clamp 386B-1 included. The Anti-rotation system is compatible with Manfrotto products: 055 series, 190 series, and 386B-1 Nano Clamp. The unique shape of the Anti-rotation adapter allow the equipment to be securely interlocked so the arm will not rotate anymore.