OUL Aogami Super Petty Knife 135 mm / 5.3" – Keyaki Handle
Laser-Thin Precision for Intimate Prep Work
The OUL Aogami Super Petty Knife 135 mm represents the apex of agile, detail-oriented Japanese cutlery. Sized between an everyday paring knife and a short chef's knife, this 135 mm Petty is the ultimate companion for peeling, coring, trimming proteins, and executing high-precision board work where a larger Gyuto feels cumbersome.
Weighing an astonishing 59 grams with a razor-thin 1 mm blade thickness, this knife falls squarely into the coveted "laser" category. It glides through delicate produce—shallots, garlic, chives, and citrus—with near-zero resistance and zero wedging.
Aogami Super: The Pinnacle of Edge Retention
At the heart of this knife is Aogami Super (Blue Super Steel), one of the most revered high-carbon tool steels produced by Hitachi Metals. Enriched with elevated carbon, tungsten, and molybdenum, Aogami Super achieves exceptional hardness (~64–65 HRC). It takes an extraordinarily keen apex, holds that surgical sharpness far longer than conventional steels, and provides crisp tactile feedback on whetstones.
Traditional Keyaki Wood Handle
Fitted to the blade is an authentic Japanese Wa-style handle carved from Keyaki (Japanese Zelkova / Japanese Elm). Renowned for its natural water resistance, dimensional stability, and warm golden-amber grain, Keyaki delivers a textured, non-slip grip that feels featherlight and balanced in the hand for both right- and left-handed cooks.
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Specification |
Details |
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Brand / Maker |
OUL |
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Knife Type |
Petty (Utility / Paring) |
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Blade Steel |
Aogami Super (Blue Super) High-Carbon Steel |
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Hardness |
~64–65 HRC |
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Edge Bevel |
Ambidextrous Double Bevel (50/50) |
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Handle Material |
Japanese Keyaki Wood (Zelkova) |
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Blade Length |
135 mm (5.3") |
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Blade Width |
27 mm |
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Blade Thickness |
1 mm |
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Weight |
59 g (Ultra-Lightweight Laser Profile) |
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Handle Length |
113 mm |
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Handle Thickness |
23 mm |
What’s in the Box?
- OUL Presentation Box: Fitted protective box suitable for gifting and secure storage.
- Protective Blade Sheath Sleeve: Guards the ultra-thin cutting edge during unboxing and transit.
Authorized OUL Dealer Direct
Every OUL knife purchased through Hasu-Seizo is direct-sourced from authentic maker workshops in Japan. Before any knife leaves our Seattle area warehouse, it undergoes a comprehensive physical quality inspection to verify straightness, spine-to-heel alignment, and a pristine out-of-the-box edge.
Carbon Steel Care & Maintenance
Aogami Super is a pure high-carbon performance steel; it is reactive and will rust if exposed to standing moisture.
- Keep a Towel Handy: Wipe the blade clean and completely dry between tasks, especially when prepping acidic ingredients like shallots, lemons, or tomatoes.
- Hand-Wash Only: Wash immediately with warm water and a non-abrasive sponge. Never clean in a dishwasher.
- Natural Patina: Over time, the steel will develop a distinctive blue-grey patina that shields the core from rust. If storing long-term, apply a drop of food-safe mineral or Camellia oil.
- Cutting Surface: Use soft wooden or high-density rubber boards. Avoid cutting bones, frozen items, or hard shells to prevent edge damage on this ultra-thin 1 mm grind.
Frequently Asked Questions
What is the advantage of a 135 mm Petty knife over a standard paring knife? A standard paring knife (typically 80–90 mm) is limited strictly to in-hand tasks like peeling. The 135 mm length gives enough flat-edge contact to function as a compact chef knife on the cutting board for small garnishes, shallots, and herbs, while remaining agile enough for off-the-board peeling and trimming.
What makes Aogami Super different from regular carbon steels? Aogami Super contains higher percentages of carbon, chromium, and tungsten than White Steel or Blue #2. This alloy composition gives it superior wear resistance, allowing it to maintain its surgical edge across significantly more prep cycles before needing whetstone touch-ups.
Where does this knife ship from? All inventory is inspected and shipped directly from our warehouse located in the Seattle area, ensuring prompt domestic transit and tracking.
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Hasu-Seizo is a family-owned and operated business proudly offering handcrafted Japanese knives to chefs of all levels in the U.S. and beyond. Originally from Osaka, we are the makers of the renowned Sakai Takayuki brand, carrying forward the rich traditions of Japanese knife-making. Rooted in generations of craftsmanship and dedication, we honor this legacy with every blade we create.