Katana – Heavy Blade Wide Manganese Steel Sword 黒雷 Kokurai
🧡 We’re not a mass factory. We’re a workshop that listens.
🤝 Trusted by 1600+ buyers & 100+ honest reviews.
🛠️ Every katana is handcrafted — no shortcuts, no tricks.
🔁 30日間の手間いらずの返品(カスタム注文は対象外)



This is Kokurai — a wide-bodied black handle katana forged for brute cutting power and refined balance. With a 73cm blade, 3.5cm width, and 35cm tsuka, this heavy-duty sword is designed for serious tameshigiri and high-resistance targets.
Crafted from high manganese steel and quenched at high temperature, the blade features twin bohi for reduced drag and amplified sound feedback. The widened edge geometry and forward weight make it ideal for clean cuts on dense targets, while the extended handle enhances two-handed control and momentum transfer.
Finished with brass fittings and horn-tipped saya mouth, this heavy blade katana is a perfect fusion of function and form — built for practitioners who want force with finesse.
Specifications
Material | High Manganese Steel (hand-forged, high-temperature quenched) |
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Blade | 73 cm, 3.5 cm wide, dual bohi, full tang, hand-polished |
Handle (Tsuka) | 35 cm, real ray skin under black cord wrap |
Fittings | Brass tsuba, fuchi, and kashira with storm motif |
Scabbard (Saya) | Hand-lacquered hardwood, buffalo horn koiguchi (mouth ring) |
Dimensions
Overall Length | 118 cm (46.5 inches) |
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Blade Length | 73 cm (28.7 inches) |
Handle Length | 35 cm (13.8 inches) |
Blade Width | 3.5 cm (1.38 inches) |
Weight without Scabbard | 1.2 kg (2.65 lbs) |
Total Weight | 1.6 kg (3.53 lbs) |
Features
- Wide blade for increased cutting weight and stability
- Dual bohi design improves handling and delivers sharp tachikaze ("cutting sound")
- 35cm tsuka for leverage, ideal for large target slashes
- Brass dragon tsuba and lion-themed kashira bring martial elegance
- Polished black saya with buffalo horn koiguchi for durability
- Perfect for strength-based tameshigiri, collection, or functional display
"Weight demands control. Precision demands presence."
Kokurai is a sword that rewards deliberate technique with uncompromising power — for those who cut with intention.
分かります — 「無料配送」は気分がいいものです。
それは行動心理学が働いているのです。
それはあなたの脳に「節約している」と錯覚させます。
実際には、あなたは別の方法で支払いをしているだけです。
しかし、私たちはその手のゲームはしません。
偽りの「無料配送」も、吊り上げられた価格も、マーケティングの心理的トリックもありません。
ただただ正直な刃、正直な価格です。
それは少し馴染みがないかもしれません — ひょっとすると居心地が悪いと感じるかもしれません。
しかし、私たちは信頼が戦術ではなく真実に基づいて築かれると信じています。
私たちは誰ですか
私たちの恐れを知らぬ創始者は、関市の地で刀の魅力に取り憑かれました。しかし彼の真の情熱は古代中国の武器にあります。勾践の剣や干将・莫耶の剣といった伝説的な刃物にインスピレーションを受け、ライズはアジアの職人技の美しさを世界に広める使命を担っています。
Our 11 skilled artisans pour their heart and soul into every blade. From heavy metal enthusiasts to zen masters, each brings their unique personality to the forge, crafting katanas and Chinese swords that are more than just weapons - they're works of art.
当社の研究開発責任者は、刀匠技の達人です。数十年にわたる経験と伝統的職人技への愛情をもとに、NIMOFANのすべての刃物が傑作となるよう保証しています。仕事の合間には、盆栽のコレクションを手入れしたり、書道を練習したりしています。
Leads our customer service team, ensuring every interaction with NIMOFAN is as exceptional as our products. With her contagious laughter and ability to brighten anyone's day, Emily is the heart of our team.