Big Tube 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 stabilizedpolycarbonate tube combine to make these feeders an investment that lasts a lifetime. Customers will appreciate the convenience of easily removing the Quick-Clean base without the need of tools even with a seed tray attached. 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. Backed with a Lifetime Guarantee. The 4″ diameter Quick-Clean Base easily removes for a thorough feeder cleaning