Aspects' Round Seed Tray can be pole-mounted or hung. Trays can be used on the feeder mounted on a 1/2" side pipe threaded on one end. Adding a seed tray to your existing feeder will allow more of the seed to be eaten feeder and less scattered on the ground. This seed tray will work with any standard size Aspects Quick Clean feeder with the exception of the Big Tube feeder. Tray only, feeder sold separately.