Droll Yankees Bird Feeder Tray, Platform Seed Catcher Accessory Attachment, 7.5 Inch Diameter, Clear, A-6T Seed Trays attract a wide variety of birds, including ground feeders like Cardinals UV-stabilized polycarbonate to protect against the elements Fits Droll Yankees Classic, New Generation, Ring Pull, and Bird Lovers feeders No tools needed, connect with the included threaded black plug A-6 Seed Tray, 7-1/2" diameter. Attaches with threaded plug to all DY tube feeders and other brands