Tsunehisa is a company that works with a variety of blacksmiths. These knives are produced in Tosa, Japan. They use nice quality steels at a very reasonable price. The fit and finish are excellent. 

Specifications:

Brand: Tsunehisa

Location: Tosa, Japan

Edge Steel: AUS-10

Cladding: Stainless

HRC: 61-62

Handle: No Handle

Use & Care

• Do not attempt to cut, hit or chop frozen products or bones. The blade can chip or break with improper use.
• Hand wash with warm water and towel dry. Never put the knife in a dishwasher, nor soak it in water. Ever!
• Use a sharpening stone to maintain the sharpness of the blade. 
• Do not use on hard melons or items that may torque the blade.
• Use a sharpening stone to maintain the sharpness of the blade.