These internal halyard flagpoles made from stainless steel are available in mounted heights from 20 ft. to 80 ft.The internal halyard poles have a winch mounted inside the flagpole shaft, operable only with a removable crank handle. The crank type stainless steel cable concealed halyard system deters flag theft and vandalism,moreover ,not only is visually pleasing,but need less manage and maintain.It widely used in commercial grade.