The Boss Buck 12V Auto Feeder has a thick wall of HDPE UV protected plastic that will not rot, rust or leak! This maintenance free hopper system is the best seller in our line! Program up to 16 different feed times with this versatile auto feeder. The Custom Designed head features a 10 degree of angle, and a 1 overhang on the 4 I.D. feed ports. Each feed port has a drain hole to disperse any water that enters the tip of the feed port. Our patented design features an internal cone that dispenses the feed evenly to the three ports. The 3-Way inner sleeve allows the user to control the feed flow of almost all feed shapes and sizes. Push it all the way up to virtually shut off the flow, or ease it down until you get the optimal flow on your favorite type of critter food.