Zeus Industriale SA Founded by Don Nicholás de Arregui in Eibar, in the Basque region in 1926. Zeus initially produced small parts, then components and finally complete bicycles. Nicholas de Arregui continued to acquire patents up until about 1964. Zeus bicycles most often used tubing by Reynolds 531 or Durifort in Metric (French) tube & threading dimensions. Of course, they also often featured Zeus components.