The Wildgame Innovations Evolution Game Feeder Kit has a 100% varmint proof design that keeps critters out which results in the best possible utilization of your feed supply. The spring-loaded design automatically reseals to the barrel after spinning and the new arm design uses centrifugal force to drop as feed is dispersed. The Evolution game feeder comes with customizable feed times and different capacity options to fulfill the needs of your operation.Features30 Gallon Feeder / 1-4 available feed times / 30 feet radius40 Gallon Feeder / 1-6 available feed times / 50 feet radius100% varmint proof so you can easily attract and pattern gameSpinner plate recessed underneath heavy-duty mounting bracket doesn't let critters access feedSpring-loaded design automatically reseals to barrel after spinningNew arm design uses centrifugal force to drop as feed is dispersed