The square head genno has rounded corners for strength, narrows slightly at the waist and is noted for its excellent directional stability.
The polished faces are selectively hardened by quenching the head under a stream of flowing water, this gives durable working surfaces but leaves the middle of the head softer, which deadens the blow and kills vibration. The polished hachimaki bands around the faces are not a laminated layer but a traditional decorative touch that tidies up the appearance after polishing the faces.
In Japanese tradition, the final securing of hammer and axe heads is performed by the user - who thereby takes ownership of the tool and begins their lifelong responsibility for keeping it secured.
Handle: Japanese White Oak
| weight (g) | head dimensions (mm) | overall length (mm) |
| 450 | 96 x 31 x 25 | 360 |