KAI Japan — Japanese Blade Expertise Since 1908
KAI is a Japanese company founded in 1908 in Seki City by Saijiro Endo. Seki has 800+ years of blade-making history as the birthplace of katana swords. KAI created Japan's first safety razor and today offers 10,000+ products — medical-grade blades with unmatched cutting precision.
Frequently Asked Questions about KAI
What is KAI and where was it founded?
KAI was founded in 1908 in Seki City, Japan by Saijiro Endo. Seki is the historic capital of Japanese blade-making with 800+ years of katana sword tradition. Today, KAI Group offers over 10,000 products worldwide across multiple categories.
Why are KAI blades considered among the best?
KAI blades are manufactured from medical-grade Hitachi Metals stainless steel — the same used in the company's surgical scalpels. They're considered among the sharpest blades worldwide, ideal for coarse beards requiring effective cutting power.
What innovations has KAI brought to shaving?
KAI created Japan's first replaceable-blade safety razor (1932) and the world's first 3-blade razor (K-3). Recently, they introduced the Paper Razor — the first paper-handle disposable razor with 98% less plastic, pioneering sustainable shaving.
Who are KAI DE blades best suited for?
Due to their exceptional sharpness, KAI DE blades are recommended for intermediate to experienced wet shavers. Ideal for men with coarse beards, especially when paired with slant razors. Beginners may prefer milder blade options initially.
What other products does KAI manufacture?
KAI Group manufactures: kitchen knives (Shun series), surgical scalpels, scissors, nail clippers, disposable razors, and folding knives (via Kershaw Knives). Their blade expertise spans every cutting application from grooming to medical instruments.
Where are KAI blades manufactured?
KAI blades are manufactured exclusively in Japan at the company's facilities in Seki and Gifu Prefecture. Each blade features proprietary coating for reduced friction, corrosion resistance, and extended blade life, maintaining Japanese quality standards.
✓ Authorised KAI retailer | ✓ Shipping worldwide | Updated: April 2026
