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  1. Genno Hammer in action with a Japanese carpenter
    Weighty but perfectly balanced tool
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  1. Japanese Hammer

Genno Hammer
Marumasu

Beautifully balanced octagonal Japanese hammer.

More Information

Japanese hammers - genno or kanazuchi - are, just like so many tools from Japan, a bit different to their western siblings. For starters, they’re beautiful, simple and elegant. These ones (but not all) have octagonal heads, with flat sides, so one can hammer from the side rather than just the face. One end of the head is flat, the other slightly convexed, for fine finishing.

The handles are Japanese white oak (Quercus myrsinifolia - you should know that by now) and they’re longer and thinner than one would expect, resulting in a finely balanced tool.

The high quality steel of the head helps to absorb shocks, making your hammering experience a little less taxing. Choose the lighter hammer for detailed chisel work and fine joinery and the heavier hammer for all those things plus good old fashioned nail bashing.

Delivering to US (Paying in USD) Edit

300gFree delivery for orders over $100.00 (excluding any surcharges if applicable, and any applicable customs taxes for non GB deliveries)Add to Wishlist / Save for later
450gFree delivery for orders over $100.00 (excluding any surcharges if applicable, and any applicable customs taxes for non GB deliveries)Add to Wishlist / Save for later
Genno Hammer • 300g
  • 14.5oz
  • 1' 2.2 x 3.3 x 0.9"
  • Japanese White Oak handles
  • Made in Japan
  • In Stock - Available to dispatch worldwide, contact us for showroom stock availability
Genno Hammer • 450g
  • 1lb 0.6oz
  • 1' 2.2 x 3.7 x 1"
  • Japanese White Oak handles
  • Made in Japan
  • In Stock - Available to dispatch worldwide, contact us for showroom stock availability
Global Delivery
  • Free delivery for orders over £/$/€100*
  • Price depends on location - adjust the COUNTRY tab in your basket to see the price.
  • We use DHL, FedEx, or UPS, and we’ll email you the tracking info.

*Customs fees may apply and are estimated during checkout. Surcharges may apply to some larger or heavier items to some areas.
* Please note Niwaki are not responsible for any import duty, taxes or fees incurred and these will be will be collected by our courier during customs clearance — For EU countries, when possible DHL will provide an estimate on the order confirmation page.

Genno Hammer
Essentials