Aspects' Quick Clean Nyjer Tubular Feeders combine heavy die-cast metal caps and base with a clear UV stabilized polycarbonate tube to make these feeders an investment that lasts a lifetime. A built-in seed deflector in the base allows birds to remove every last seed. These feeders feature a revolutionary removable base. To remove the base all you need to do is push the buttons and the base easily slides out! It is one easy step that makes cleaning your feeders a snap!