The Boss Buck 4-Way Gravity Head has 8 ports with 4 I.D. openings for a deer's muzzle. This 4-qay gravity head accommodates the largest whitetail. with our patented protein/gravity head, you get the most moisture-resistant free choice feeding system available on the market today! This custom designed head features a 10 degree angle and a 1 overhang on the 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 four feed ports. The adjustable height inner sleeve of this versatile gravity head 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.