Hatsukokoro Ryuhyo SG2 Damascus Rainbow Petty 150mm

Hatsukokoro Ryuhyo SG2 Damascus Rainbow Petty 150mmThe Hatsukokoro Ryuhyo SG2 Damascus Rainbow Petty 150mm is a Japanese utility knife from Hyogo, featuring a 156mm edge length and a double bevel profile. It utilises Sanmai construction with a powdered SG2 R2 stainless steel core clad in stainless Damascus. The blade carries a Migaki polished finish and a sabre or V grind geometry that transitions smoothly without a shinogi line. This model is fitted with a forged carbon fibre octagonal handle and

The Hatsukokoro Ryuhyo SG2 Damascus Rainbow Petty 150mm is a Japanese utility knife from Hyogo, featuring a 156mm edge length and a double-bevel profile. It utilises Sanmai construction with a powdered SG2/R2 stainless steel core clad in stainless Damascus. The blade carries a Migaki polished finish and a sabre or V-grind geometry that transitions smoothly without a shinogi line. This model is fitted with a forged carbon fibre octagonal handle and weighs 67g.

Designed for precision tasks such as peeling, trimming, and slicing fruits and vegetables, this petty knife offers a thin geometry behind the edge. The SG2/R2 steel provides high wear resistance and a hardness of 62–64 HRC. The source notes the blade can be brittle, advising against cutting hard materials or bones. Maintenance involves washing with neutral detergent and drying immediately, as the handle is not dishwasher safe.

With a heel height of 32mm and a width of 1.7mm at the heel, the knife balances lightness with a refined aesthetic. The Damascus cladding displays a rainbow pattern. It serves as a practical tool for detailed work where a longer, slimmer profile than a standard Western paring knife is beneficial.