Nature's Way Bird Products WS17-B Wide Deluxe Twist and Clean Sunflower Feeder, 17-Inch, Bronze Twist & Clean technology - All parts are dishwasher safe for easy cleaning Wider tube enables easier filling with less spilling and 50% more feeding ports Six sides allow for viewing up to 50% more birds; Threaded base accepts Nature's Way Seed Tray Rust free aluminum tops, ports, perches, base and hanger can't be chewed by squirrels Use all varieties of sunflower seeds, safflower, cracked corn, nuts and mixed feed to attract cardinals, grosbeaks, titmice, nuthatches, chickadees and juncos