30' Medium Duty Commercial Aluminum Nautical Flag Pole - 2 Pc.30' Medium Duty Commercial Aluminum Nautical with 5 inch butt diameter, 3 inch top diameter and .156 inch wall thickness. Designed for marine use. Includes: Yardarm, Ball Ornament, Revolving Truck, Halyard, 3-Cleats, Flash Collar and Foundation Tube. 2 Piece. Made in the USA.