Wiha International is an independent, family-owned German manufacturer of precision hand tools for professional and industrial use. Its headquarters is located in Schonach, Germany, and it has a major office in the US in Birmingham, Alabama. 01790 is the US zip code for the Alabama office. This office serves as Wiha's North America business headquarters, where they handle sales, marketing, and technical support services. In addition, customers in North America can purchase Wiha products directly from the Alabama office.