1 19

Koki Square Genno Japanese Hammer – Kasumi satin finish (225 g to 675 g)

Koki Square Genno Japanese Hammer – Kasumi satin finish (225 g to 675 g)

Aitoyo Hammer

$169.00 USD
$169.00 USD
Sale Sold out
Shipping calculated at checkout.

Handpicked Japanese Brands

Ships from Japan

Quality Checked Before Shipping

Secure Checkout

Weight variants

The Koki Square Genno – Kasumi Finish is a traditional Japanese hammer hand-forged by Aitoyo Hammer. Its square head ensures precise and stable striking, while its Kasumi finish offers an elegant satin appearance, with subtle reflections and good resistance to micro-scratches.

Valued in carpentry, timber framing, and fitting, this genno combines control, balance, and Japanese artisanal craftsmanship. Each piece is hand-forged and may exhibit slight variations, testifying to its authenticity.

  • KindTraditional Japanese hammer (Genno)
  • ShapeSquare Head
  • FinishingKasumi (matte satin)
  • Brand / LineKoki
  • WorkshopAitoyo Hammer
  • OriginJapan
  • MaterialForged steel
  • Manufacturing100% handcrafted

Available sizes (European conversion)

  • 225 g

    Head length: approx.70 mm

  • 300 g

    Head length: approx.80 mm

  • 375 g

    Head length: approx.85 mm

  • 450 g

    Head length: approx.90 mm

  • 570 g

    Head length: approx.100 mm

  • 675 g

    Head length: approx.110 mm

⚠️ Each hammer beinghandmadeSlight variations in weight, dimensions and finish are normal and are part of its authenticity.

  • Traditional Japanese hand-forged hammer
  • Square head for precise and controlled striking
  • Kasumi satin finish (matte, elegant, durable)
  • Japanese handcrafted product
  • Excellent balance and readability of keystrokes
  • Wide range of weights depending on the use
  • Each piece is unique
View full details

Products frequently bought with