This Best-1 16oz Hummingbird Feeder is known for its durable design. Featuring a heavy-duty glass bottle and a high-impact plastic base that is designed to resist bees and wasps bee/wasp proof, built-in perch, & 8 feeding stations. Replacement parts available, base separates for easier cleaning, no O ring required, will not rust, ready to hang, & made in the USA.(Boxed).