The Squirrel Buster Legacy delivers all the features proven to maximize your wild bird feeding experience. Award winning, patented Squirrel Buster technology is truly squirrel proof. Weight adjustable closing mechanism shuts out squirrels as well as some heavier undesirable birds. Both perching and clinging footholds increase bird activity. Chew-proof components stop annoying squirrel damage. Features a patented seed ventilation system that keeps seed fresher. Detachable Component System for easy cleaning, filling and servicing. Tough polycarbonate tube. Stainless steel perches and hanger. UV stabilized components. Comes with Lifetime Care.