Versatile 15cm (5.9”) friction arm with interchangeable Anti-rotation attachments and additional 3/8’’ adapter included. The Anti-rotation system is compatible with Manfrotto products including 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. Attachments can easily be replaced by using the included hex key and are compatible with a range of different adapters .\nPlease note that the arm measurements do not include the lenght of the adapters