These 6' satellite mounting poles/antenna masts are made of 16 gauge galvanized steel pipe and has a 2” outside diameter. They ship 4 poles per pack. - All poles are high quality and very rigid. - Poles are G90 galvanized zinc with clear coating that is rust resistant. - True diameter O.D. - Virtually seamless welding. - 16 gauge pole - Bundle of 4 - 4” flattened segment to eliminate rotation - 4” flattened segment 6” from end of pole.