Big Tube (4" dia) seed tube feeders can be filled with a variety of seed types such as Sunflower, safflower and specialty seed blends. Aspects’ Quick-Clean Seed Tube Feeders featuring heavy die-cast metal caps, bases and a clear UV stabilized polycarbonate tube combine to make these feeders an investment that lasts a lifetime. Enjoy the convenience of easily removing the Quick-Clean base. A built-in seed deflector in the base allows birds to remove every last seed. The metal cap lifts and pivots easily for filling and cleaning. Add a seed tray to attract more birds. Backed with a Lifetime Guarantee.