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Hatsukokoro Mercury Petty Kurozome Damascus 150mm (5.9") [Mono Olivewood]
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✔︎ No import fees & duties (US tarrifs excluded) |
- Description
- Specifications
- Knife Care
- Shipping
Built around a high-performance SG2 core, this Hatsukokoro Petty takes and holds an exceptional edge, slicing effortlessly through every ingredient. A true all-rounder for prep, filleting, and fine-detail work, it combines striking aesthetics with lasting durability—a kitchen knife with character that can be passed down to the next generation.
BLADE SHAPE:
The Petty is excellent for peeling and preparing vegetables, and thanks to its thin, nimble blade. Ideal for precise and controlled cutting tasks: filleting portioned fish, cutting poultry, slicing small pieces of cured meats, making it a highly functional tool for professional and home kitchens alike.
The blade is thin with a slightly stiff spine, tapering to a fine, agile tip for precise, controlled cuts. Its lower height limits pinch-grip clearance, but the thin grind behind the edge allows it to glide easily through small to medium ingredients. A smooth edge profile from heel to tip supports gentle rocking and clean slicing, while the rear-set balance point offers excellent control across different grips.
STEEL:
SG2 steel is a powder steel, renowned for its hardness and subsequent edge retention—due to a high carbon (C) content of 1.5%. The steel is also high in chromium (Cr)—around 15%, which adds to corrosion resistance and Molybdenum (Mo) that improves the blade’s wear resistance. SG2 steel blades will be able to achieve a fine sharpness due to the fine microstructure of the steel and will keep it—without having to worry about maintenance and corrosion.
LAMINATION:
The hard SG2 core is sandwiched between 15 layers of softer stainless steel on each side of the blade. This san-mai construction protects the delicate core from impacts and everyday use while keeping the blade strong, durable, and resistant to breakage.
GEOMETRY:
A convex (hamaguri) grind features an outward-curving, clam-shaped edge inspired by traditional katana blades. It improves sharpness, food release, and edge strength by keeping more steel behind the edge.
BLADE FINISH:
The blade features a black-etched kurozome Damascus finish, which is slightly raised—allowing you to glide through different ingredients without drag or resistance. The spine and corners are carefully polished, with a flawlessly finished choil and polished edges for a refined, ergonomic feel. The rounded choil and spine prevent hand fatigue, even during extended use.
HANDLE:
The knife features a Japanese (Wa) octagon handle crafted from a single piece of olive wood—an unusual choice for Japanese knives. The handle is expertly finished with a tight seal and flawless fit. The warm tone of the olive wood beautifully complements the dark, etched Damascus blade.

Blade shape: Petty
Steel type: SG2 / Stainless Damascus
Blade construction: San-mai / hamaguri / 31 layers kurozome damascus
Hardness (HRC scale): 63+-
Overall length: 277mm (10.9")
Blade length: 150mm (5.9")
Blade height: 31mm (1.2")
Spine thickness: 1.5mm (0.06")
Weight: 68g (2.4 oz)
Handle length: 115mm (4.5")
Handle type / wood: Japanese / olive wood
Kanji on the blade:
Blacksmith: Hatsukokoro
Location of the smithy: SEKI / Gifu Prefecture / Japan
☝️ Japanese kitchen knives in our store are handmade from natural materials. Slight variations in color, texture, weight and other dimensions are possible. We try to give a good photographic representation of our products, however computer screen resolution and colors do vary, so products might not look exactly as they are seen on screen.
Blade wear depends on the quality of steel, usage and maintenance of the blade. Japanese knives are made of high-quality steels. Follow these tips to keep your Japanese knife in top-notch shape:
✔ Use a wooden, plastic or rubber cutting board.
✔ After use, wash the knives and wipe them dry.
✔ For storage, use a knife holder or a protective knife sheath (saya).
✔ A good cutting technique is your best bet to prolong sharpness.
✔ Use sharpening stones to sharpen the knife.
❗️Don’t leave the knife in the sink. Wash it by hand.
❗️Don’t wash the knife in the dishwasher.
❗️Don’t use the knife on glass, ceramics, marble or steel surfaces.
❗️Don’t scrape the food off the cutting board with the edge of the blade. Use the spine of the knife instead.
❗️Knife is a tool intended for specific use - cutting food. It is not a can opener, screwdriver, trowel, wire cutter, hammer etc.
→ For more details, read our guide
on Maintenance of Kitchen Knives.
🤙 Contact us if you need some help. We reply within 1 business day.
SHIPPING RATES:
- €10 - flat worldwide rate with DHL Express (express delivery, 2-5 business days).
- FREE - all orders over €300 (DHL Express).
EXCEPTIONS:
See our Shipping page for more details.
DUTIES AND IMPORT TAXES:
We ship all orders DDP (duties & taxes paid). This means you will not be charged for any import fees and taxes (including VAT). All our prices are final. The price you see at checkout is the final price, no hidden costs.
DELIVERY TIME:
- Europe: 1-2 business days
- US & Canada: 2-4 business days
- Rest of the World: 3-5 business days
RETURNS:
Our return policy lasts 30 days. If more than 30 days have gone by since the day you received your order, unfortunately we can’t offer you a refund or exchange.
→ Read our SHIPPING & RETURNS policy for more info. We strive to solve any issues fast and with as little hassle for you. If you have some additional questions, please contact us.
Each knife comes with:
✔️ Instructions and knife care leaflet.
✔️ A preventive Band-Aid – the knives are very sharp! 😉
✔️ Original box from the blacksmith, which we wrap in an old Japanese newspaper sheet – so every knife is ready to be passed on as a gift as soon as it hits your doorstep!
✔️ We also offer a special gift wrapping option with the traditional Japanese washi paper.
QUIZ
Still doubting which type of Japanese knife should best fit your needs?
We created a 5-steps quiz to help you find the perfect knife based on your cooking skills and the type of food you prepare.