The American Hunter Gravity Feeder head attachment can be placed with your American Hunter feeder and keep feed in one central area. The feed tubes have a 9 degree angle and are 8" long with a 3.5" inside diameter. Each feed tube port has a drain hole to keep feed from sitting in water. FeaturesAdjustable inner sleeve to control feed flowThree 8a ^2 feed tubes3/4a ^2 Lip prevents feed spillage3.5a ^2 Diameter tubes at a 9 degree angleHooded overhang shields feed from the elementsTwist lock or flat mounting options