KAI nail file is made in Japan. The nail file is made of stainless steel and has a brushed appearance. Suitable for both men and women. Dimensions: 10 x 95mm. Hardness: 120/280. Suitable for filing fingernails and toenails. 120/80. Recommended to be filed after the cutting procedure. The KAI company is known for its functional, innovative and durable products. KAI products are considered the best in the world. The products have been created following centuries-old culture and tradition, as is the case with Samurai swords. All KAI products are made of high quality and carefully selected materials, and the standards of swordsmithing passed down through generations are followed in the production of the blades.