Carbonarm uses only 100% "Made in Italy" carbon fiber to guarantee extraordinary resistance to wear and sea water, with very low weight. The quality of the carbon fiber tubes we have chosen for our arms is very high, as evidenced by the beauty of the weave. The ball joints are made of anticorodal aluminum, anodized to 40 microns, and feature an O-ring to facilitate adhesion with the clamps. The ball joints are bonded to the carbon tube with a special glue, ensuring a watertight seal at depths of up to 150 meters.