Ryuhyo Rainbow R2/SG2 Custom #161 Damascus Bunka 170mm
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Ryuhyo Rainbow R2/SG2 Custom #161 Damascus Bunka 170mm
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SPECIFICATIONS
Knife Style: Bunka
Steel Type: Stainless Steel
Blade Material: R2 (SG2)
Blade Finish: Rainbow Damascus
Blade Hardness: 63HRC (+/-1)
Bevel: Double
Handle: Blue Epoxy (Swirl)
Blade Length: 170mm
Heel Height: 48mm
Spine Thickness: 2.20mm
Weight: 138g
The first thing you'll notice is the explosion of color. As light dances across the blade, vivid reflections burst from brilliant gold and fiery pink to electric blue, emerald green, and deep violet. The effect is bold, luxurious, and constantly changing—an unmistakable statement piece that looks different from every angle. It's one of those finishes that immediately stops people in their tracks.
This particular knife is truly one of one. While the blade itself comes from one of Hatsukokoro's most striking series, we transformed it into something entirely unique by hand-assembling it here at Kakushin with a custom full-tang handle crafted from mesmerizing blue swirl stabilized epoxy. The flowing shades of blue perfectly complement the rainbow Damascus blade, creating a seamless fusion of modern artistry and traditional Japanese craftsmanship. Once assembled, no second knife like this will ever exist.
Another beautiful creation from Hatsukokoro, the blade is part of a collaborative project that brings together some of Japan's most talented blacksmiths, sharpeners, and craftsmen. By partnering with renowned artisans across the country, Hatsukokoro consistently delivers knives with exceptional fit and finish, outstanding cutting performance, and remarkable value. While unquestionably a premium knife, the level of craftsmanship and refinement often rivals pieces costing significantly more.
Handcrafted in Echizen, this 170mm Bunka features an exclusive rainbow finish layered over a flowing Damascus pattern, giving the blade incredible depth beneath its vibrant colors. Every movement catches the light differently, revealing dramatic shifts between warm and cool tones that make the knife feel almost alive. It's a finish that confidently blends modern luxury with traditional Japanese craftsmanship.
Performance is every bit as impressive as its appearance. At its core lies premium SG2 (R2) powdered stainless steel, hardened to approximately 63 HRC, providing exceptional edge retention, impressive corrosion resistance, and long-lasting cutting performance. The grind is unmistakably that of a true laser: incredibly thin behind the edge, effortless through ingredients, and designed to glide with minimal resistance while delivering remarkable precision.
At 170mm, the Bunka is one of the most versatile profiles available. Compact, agile, and incredibly easy to maneuver, it excels at everything from vegetables and herbs to boneless proteins and detailed prep work. Its signature reverse tanto tip offers exceptional precision for intricate cuts, while the taller blade provides generous knuckle clearance and plenty of surface area for scooping ingredients from the board.
This isn't simply another premium Japanese knife—it's a one-of-one custom creation. Combining the effortless cutting performance of an SG2 laser, the breathtaking brilliance of Hatsukokoro's rainbow Damascus finish, and a custom blue swirl epoxy handle assembled by hand at Kakushin, it stands as both an elite kitchen tool and a true collector's piece. Once it's gone, there won't be another exactly like it.
◻️ Additional Information
Please note that colours, shading, and overall appearance may vary slightly between photos and the product you receive. Lighting, camera exposure, and reflections on materials like steel, epoxy, and wood can all create subtle differences.
Many of our items are handmade, which means each piece has its own character. Minor variations in pattern, texture, or finish are normal and part of the craft.
If you’d like to see additional photos or close-ups of any item, feel free to request them before or after placing your order—especially for one-of-a-kind pieces. We’re always happy to help you choose the perfect knife or handle.
◻️ Sharp Certified
Before our knives are shipped, each one undergoes a rigorous sharpness test to ensure they meet the highest standards of quality. Our BESS Certified sharpness scale will guarantee that your knives deliver the smoothest cuts.
This commitment to sharpness not only guarantees that you receive a product that's ready to perform at its best but also reflects our dedication to delivering excellence in every aspect of our field.
◻️ Shipping & Returns
Every product listed on our website is physically in stock at our shop and typically ships within 24 hours — giving us enough time for sharpening and proper packaging.
The only exceptions are custom knife assemblies or engraving, which may require 3-5 days before shipping. Everything is done in-house, so even with the extra steps, it’s still exceptionally fast.
Canadian orders can say goodbye to unexpected duties, additional customs fees and exchange rate fluctuations; all our prices are clear and upfront.
For international orders, we take care of providing the declarations documents on items from foreign countries.
We know choosing a knife online isn’t always easy. To make things stress-free, we offer a flexible 30-day Return Policy on regular-priced items. Take a look at our full policy for all the details!
◻️ Contact Us
We are at your service through email, social media, or even by phone, where you can have a direct conversation with one of our team members during our business hours.
Whether you require assistance with your existing product, have inquiries about a potential purchase, need more specific details, additional photos, or even a video to get a better sense of the product in a real human hand, we've got you covered.
Don't hesitate to get in touch.