Whitecap 17" Rail Mount Flag Pole - 1/2" Diameter, Stainless Steel Staff Nylon Mount Ships within United States Free shipping with Fishbrain Pro. Sign up here. Share Loading Facebook Like button... Whitecap 17" Rail Mount Flag Pole - 1/2" Diameter, Stainless Steel Staff Nylon Mount Ships within United States Free shipping with Fishbrain Pro. Sign up here. Share Loading Facebook Like button...