Blackburn Manufacturing is the Worldwide Leader in Marking Flags! We are unmatched in quality marking flags with the best customer service in the industry for over 70 years. Blackburn produces small plastic flags attached to wire, plastic, or fiberglass staffs. Marking flags can be customized and used by construction, survey, public works, utilities, landscaping, soil conservation, farming, forestry, gardening, landscaping... Read More about Blackburn Manufacturing Co