ALUMINUM OXIDE RING · The innovative idea of using ceramics as a fishing guide started
some 40 years ago with the introduction of Aluminum Oxide, also known as the Hard Ring guide. With
this new material, Fuji started a revolution in guide development that has been a mainstay for rod
builders and fisherman over all these years. All Aluminum Oxide rings are diamond polished to an
ultra-smooth finish and come in a variety of frame styles and finishes.