Unko’s carbon fiber cuttlefish barrel is a great option when using a double roller muzzle, high capacity reel, or thicker shaft. 26mm ID, 30mm OD, 2.65mm track height. 70mm wide cuttlefish section that begins 10cm from the handle end and terminates to round at 78cm. Cuttlefish barrels offer additional buoyancy, recoil absorption, and lateral tracking. Foam filling provides leak prevention, sound dampening, and adds additional mass.