Manfrotto 244 Micro Friction Arm Kit with Nano Clamp Versatile 15cm (5.9”) friction arm kit with Anti-rotation attachment on one end, ¼’’ attachment on the other end & Nano Clamp 386B-1 included. The Anti-rotation system is compatible with Manfrotto products: 055 series, 190 series, & 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 & are compatible with a range of different adapters. Please note that the arm measurements do not include the lenght of the adapters. Manfrotto offers a full range of arms that help the photographer & videographer to experiment new solutions by allowing to safely hold the equipment in place. The product family consists of arms of different sizes, provided with many different attachments, thus being extremely flexible tools. Manfrotto friction arms are compatible with every camera & generally with most of the accessories in the market; combining the arms with other manfrotto accessories guarantees the ultimate performance.