The Moultrie Gravity Feeder Kit will attach to any barrel or Moultrie feeder you already own. The Gravity Kit features a reinforced Quicklock adapter for simple twist-on, twist-off installation. With adjustable flow, the Gravity Kit is ideal for feeding corn or protein pellets. Features: Adjustable flow for corn or protein pellets Features reinforced Quicklock adapter for simple twist-on/twist-off installation Quickly and efficiently convert your current feeder to a gravity feeder Ideal for feeding high-quality protein pellets during the spring/summer antler-growing season