Centurion’s Sturdy 10 oz. Glass Reservoir Holds a Generous 10 ounce of nectar, with clear glass body can easily refill and cleaning. The No-drip Base & Top are made of sturdy plastic, has water moat built into the top which provides a barrier to those pesky ants. Feeder has 5 Ports Bright Red Flowers proven to attract Hummingbirds.