Designed for the stylist who wants maximum contact with their shear for unmatched control and comfort, our Double Shark Fin shears are made with the finest and hardest steels available from HITACHI/TAKEFU, VG-10 Japanese Steel. Every Double Shark comes with a ball bearing system in the pivot area and swivel thumb for effortless movement with sharp convex edges, which translates to soft, smooth cuts and unmatched technology at a great price. They have a Rockwell hardness of 60-61.