Made up of 304 Grade Stainless Steel Rail Mounted Flag Staff to be rust resistant, strong endurance, and durable in many conditions. Stainless Steel construction, looks great and provides years of service. The flag pole is strong at high speed and the flag flutters, suitable for yachts, marines, boats, and so on. It’s very easy to use, and very easily adjusted clumps up and down to fit your flag size, ideal for boats, yachts, ships, and marines. Dimensions: Diameter: 12.7 mm (1/2 inches), Length:15-1/4 inches, Fits tubing: 7/8 inches to 1-1/4 inches. Package Includes: 1 piece of MARINE CITY 304 Grade Stainless Steel Flag Pole with round and square tube.