50x250mm Carbon Fiber Aluminum Float Arm ~Buoyancy 240gThe Nauticam Carbon Fiber Float Arms series are manufactured from a high quality carbon fiber tubing with molded plastic end caps and machined aluminum balls. O Ring seals ensure water tight integrity and each arm includes an aluminum spine that ties the entire assembly together, making the arm stronger than one machined from solid aluminum alone. Technical Specifications: Length 250mm Diameter 50mm Effective Bouyancy 240g (approx. 0. 53 lbs) Warranty