The Double Shark Fin® has been designed for the stylist who wants maximum contact with the shear for unmatched control and comfort. They are made from VG-10, one of the hardest steels available from the Hitachi factory in Japan. These shears also have ball bearings in the pivot area and swivel thumb for effortless movement of the shear with sharp convex edges, which translates to softer smoother cuts and unmatched technology at a GREAT price. They are forged to ensure excellent balance, great control and proper blade alignment. Combined with the comfort of our patented Shark Fin handle, these shears are a great choice for the professional stylist and are unlike any other swivel thumb shear on the market. In addition you get our patented scissor fitting system to ensure that your shears are properly fitted to your hand. They have a Rockwell hardness of 60-61.