Precision with a practical purpose
KAI began with folding knives in a city shaped by centuries of blade craft. Its modern story is broader: one company, several ways of making cutting tools, and a useful idea for the kitchen—choose the knife by the work it needs to do.
From folding knives to a family of cutting tools
In 1908, Saijiro Endo began manufacturing folding knives in Seki, a Japanese city with a long blacksmithing and cutlery tradition. That place matters, but it does not make the company 800 years old or mean every modern blade is made by the same method.
Over the following decades, KAI expanded into razors and other cutting tools, began kitchen-knife production in the 1970s, and built an international presence. The current company describes its mission as pairing cutting-edge precision with conscientious care—a useful lens for a portfolio that ranges from accessible, industrially made knives to premium handcrafted lines.
Read the line before reading the knife
Wasabi Black
The exact 6-inch KAI Wasabi Black utility knife is officially described as industrially made. Its straightforward construction is part of the story; it should not be recast as hand-forged or artisan-made.
Choose by task and feel
These current CosmoFactor selections show two different positions in the KAI portfolio. Confirm the exact size, construction, and care guidance on each product page before choosing.
KAI Wasabi Black Utility Knife, 6-Inch
A mid-size, double-bevel utility format for everyday slicing and prep. The exact 6715U model is industrially made, with a black handle and a 6-inch blade.
Explore the utility knife →
KAI Shun Premier Tim Mälzer Santoku Knife, 18 cm
An 18-centimeter, double-bevel santoku from the specific Shun Premier Tim Mälzer collaboration. Its hammered surface and symmetrical handle distinguish this model without defining every KAI knife.
Explore the santoku →The useful knife is the one matched to the task
Start with blade shape, size, construction, and the prep you actually do—then let the line name explain how the knife was made.
EXPLORE KAI AT COSMOFACTOR