Droll Yankees UN Universal Seed Tray
Brand: Droll Yankees
13″ platform 
UV-stabilized polycarbonate
Mounts on a 1″ diameter pole with the included Complete Clamp (#17 CC1), or attaches to Droll Yankees B-72, B-7F, Elite (EL) and Wicked Tall (WT) feeders with a B-Tray Connector (BC).