Sumikama Cutlery produces Kasumi knives in Seki, Japan. Sumikama Cutlery specializes in producing knives from the most advanced materials and using the most advanced manufacturing techniques. Kasumi V-Gold No. 10 Damascus Pattern knives are made from 33 layers of stainless steel. Only the middle layer acts as the cutting edge and is made using V-Gold No. 10 stainless steel. V-Gold No. 10 is a high-carbon stainless steel with cobalt, manganese, molybdenum, a nd vanadium for added durability and ease of sharpening. The addition of cobalt to this steel requires special tempering to maximize the full benefit of this steel. Sumikama's technique for this special tempering is a closely guarded secret.

18cm/7" Chef's knife and 13cm/5" Santoku knife; 33-layer Damascus pattern from repeated folding and forging of stainless steel; V-Gold No. 10 high carbon stainless steel; 15° beveled edge angle; 59-60 Rockwell Hardness; Laminated Wooden Handle