Caged Screen Sunflower Tube Feeder. Caged tube feeders come fully assembled, satisfaction guaranteed. May be mounted on a 1 in pole - no bracket required. Squirrel resistant! Powder-coated metal grids make it easy for birds to feed and move around, while protecting them from predators. Black Oil Sunflower or Peanut feeder. 1 in grid with a 1.25 lb seed capacity.