Sumikama Cutlery specialises in producing knives from the most advanced materials with the most advanced manufacturing techniques. This series of Kasumi knives is referred to as the VG-10 Pro series. VG-10 knives are widely known as multilayered clad knives with a decorative pattern on the blade. The Pro knives are single ply knives with VG-10 "super steel" blades that range in thickness from 1.8 mm to 2.1 mm depending on the length of the knife.