■ Made in Japan. ■ Finest in the industry, 0.04 inches (1.10 mm). - The birth of ultra fine multi-string! ★ Ultra fine 0.04 inch (1.10 mm) ★ It combines exquisite touch and flight with the use of heat-resistant and wear-resistant resin PEEK and unique manufacturing methods to achieve a ultra-fine gauge of 0.04 inch (1.10 mm) which has been said to be durable with nylon and multi-types. The ultra-fine multi-string is created to allow for both the exquisite touch and flight of the product.