gamma Katz. Japan's Hayase fishing rod is one of the top ten fishing brands in Japan, among which Japan's Hayase fishing rod is the brand of Gamma Katz. Founded in 193, Gamma Katz was the first manufacturer in the world to manufacture a fishing rod close to full carbon, which was produced in 1955. Gamma Katz's dominant product is the fishing hook, which is the most advanced fishing hook brand in Japan.