Stainless steel Made in the USA or Imported The pole is made up of polished finish 304 grade stainless steel, 15-3/16" length, Rail clamp for to 7/8" or 1" diameter rails. Its rust-free and wind resistant strong endurance, durable in all conditions. Stainless Steel Construction, looks great and provide years of service. The flag pole is strong at high speed and the flag flutters. Suitable for yacht, marine, RV, fishing boat. Easy to Use: Flag Staff is equipped with a pair of Black Plastic Clamps and Split Clips. It can adjust the distance according to the size of the Flag. Dimensions: The pole’s flag clamps can be adjusted from 0.6” (15mm) to 12.5” (317.5mm). Split clips make it much easy to change or replace flags in a minute. Package Includes:1 pc 304 Grade Stainless Steel 12" X 18" US Flag and one Boat Mount Flag Staff Pole.