No maintenance. No moving parts. That's the name of the game with this American HunterA(R) 3-way Gravity Tube Feeder. Maintenance-free Gravity Tube features an adjustable inner sleeve for controlling feed flow, plus (3) 8" feed tubes for no-hassle feeding. Adjustable inner sleeve to control feed flow (3) 8a ^2 feed tubes for no-hassle feeding 3/4a ^2 Lip prevents feed spillage 3.5a ^2 Diameter tubes at a 9 degree angle Hooded overhang shields feed from the elements Twist lock or flat mounting options No maintenance required, no moving parts, and no timer to set Order today!