Usuba knife 152 mm Popularly also called professional Japanese vegetable knife. Both knives are made of stainless steel (X30Cr13) and since they produce a minimal required hardness of >52 Hrc at Sambonet you get two delicious knives for a very nice price! Sambonet Chopper 170 mm Popularly also called Professional Japanese chopping knife Brand: Sambonet Type: Chopper 170 mm + Usuba knife 152 mm Warranty: 10 Years manufacturer warranty from Sambonet Soft grip Corrosion resistant Made of stainless steel Characteristics: Material blade: Stainless Steel (X30Cr13) Material handle: ABS-plastic Length blade Usuba: 15.2 cm Length blade chopper: 17 cm