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ITTŌ RYŌDAN Octagonal Grip Koto Shinai
A premium Koto Jissengata Shinai with a large octagonal Koban grip, combining traditional tip weight with a secure grip and a clear sense of Hasuji.
The ITTŌ RYŌDAN Octagonal Grip Koto Shinai is a Koto Jissengata Shinai: it keeps the straighter profile and tip weight of a Koto, with a thinner Jissengata tip, and adds a large octagonal Koban grip. The thicker grip strengthens the hold and makes the tip easier to control, while the octagonal shape helps keep the correct Hasuji.
Its name, 一刀両断, means cutting cleanly in two with a single stroke, an expression for decisive action. Like every model in the Premium range, ITTŌ RYŌDAN is made to your specification: choose your fittings and Tsuru colour, or order the bamboo only.

Secure Grip, Clear Hasuji
The large octagonal Koban grip fits the hand closely and is easy to hold. Its shape tells the hands how the Shinai is angled, helping keep the correct Hasuji and making it well suited to Kaeshi-Waza and Suriage-Waza.
With the tip weight of a Koto, it also suits Tobikomi-Waza and Ai-Waza from longer distance, and Oji-Waza and combinations as the situation allows.
Made to Your Specification
Choose your fittings and Tsuru colour and receive your ITTŌ RYŌDAN fully assembled and ready to use, or order the bamboo only to fit with your own fittings.
Key Features
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Large octagonal Koban grip
Easy to hold, with a strong, secure grip. Approximately 28mm on size 39, measured on the bamboo without the Tsuka, with a 30mm grip also available. -
Helps keep the correct Hasuji
Well suited to Kaeshi-Waza and Suriage-Waza. -
Koto Jissengata profile
A straighter, traditional profile with a thinner bulge, finished with a thinner Jissengata tip. -
Tip weight with control
The Koto tip weight remains, while the large grip makes the tip easier to control. -
Choice of fittings
Three fitting options, or the bamboo only. -
Choice of Tsuru colour
Seven Tsuru colours for fitted options. -
Made to federation standards
Made according to the All Japan Kendo Federation and International Kendo Federation standards. -
Men's size 39
Available in men's size 39. -
Part of the Premium range
Each Premium model carries its own name in bronze engraving.
Strong Directional Feedback
The octagonal shape helps you feel the angle of the Shinai in every strike.
Made Your Way
Your choice of fittings and Tsuru colour, assembled for you.
A Specialised Feel
Traditional tip weight with a distinctive, secure grip.
Size and Specification Guide
All our Shinai are made according to the All Japan Kendo Federation and International Kendo Federation standards. The weight below is the minimum and the length the maximum set out in the All Japan Kendo Federation guidelines for this size.
Bamboo contains natural oil that dries out over time. To help your Shinai keep its proper weight, please oil it regularly.
| Size | Suitable For | Guideline Weight | Guideline Max. Length |
|---|---|---|---|
| 39 Men's | Men, university age and adult | 510g+ | 120cm |
Who Is ITTŌ RYŌDAN For?
ITTŌ RYŌDAN is for Kendoka who prefer a traditional Koto Shinai and want strong directional feedback from a large octagonal grip.
It suits technical Kendoka who value Kaeshi-Waza and Suriage-Waza as much as committed attacks from distance.
Choose Your Fittings
Fitted options are supplied fully assembled, with Tsuka, Sakigawa, Nakayui, and a Tsuru in your chosen colour. The options differ only in the Tsuka: the other parts are the same. Or order the bamboo only and fit your own.
| Option | What You Get | ||
|---|---|---|---|
| — | No fittings | The bamboo only, for Kendoka who prefer to fit their own Tsuka, Sakigawa, Nakayui, and Tsuru | |
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Single Folded Basic Fittings | A standard leather Tsuka, folded once at the end | |
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Single Folded Deluxe ‘Gin’ Leather Fittings | A softer Deluxe ‘Gin’ leather Tsuka, folded once at the end | |
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Double Folded Deluxe ‘Gin’ Leather Fittings | A softer Deluxe ‘Gin’ leather Tsuka, folded twice at the end with two loops for the Tsuru, for extra durability | |
Choose Your Tsuru Colour
If you choose fittings, you can also choose the colour of the Tsuru, the string that runs along the back of the Shinai, opposite the striking side.
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| White | Yellow | Black | Blue |
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| Purple | Green | Red |
Please note: Shinai are made from natural bamboo, so slight variations in colour, grain, weight, and finish are normal. The product received may vary slightly from the product images. Please inspect your Shinai regularly and maintain it correctly before and after practice.













