Beaded Retainer Rings constructed with 1" nylon balls, weaved onto a 1/8" stainless steel aircraft cable with stainless steel thimbles that are attached with copper crimps are ideal for keeping the bottom of your flag close to the pole. Normally retainer rings are used on internal halyard flagpoles but they can be used on external halyard flagpoles as well to help reduce the strain on the corner grommets of your flag. Stainless steel Quick Link included.