Attract twice the amount of finches with this mesh tube design. It's the world's cleanest feeder with twist and release removable base technology and rust-resistant powder coated metal tube. Patented magnet mesh design is proven to attract up to double the number of birds than any other mesh on the market; diamond-shaped openings fit birds' beaks better than traditional screen mesh. Holds 2 pound of Nyjer®. Push button opening for easy filling, includes 6-1/2 inch seed tray. Hanging feeder measures 3-1/2 x 18 inches with a 4 inch hanger.