The 9/16 inch steel deer fence hog rings are used to secure your deer fencing to our monofilament wire used for tightening the deer fencing. The hog rings are also used to attach our small animal control fencing to the bottom of your deer fencing. We recommend using a hog ring every 3 feet on your deer fencing. Hog rings are galvanized to last for years out in the field. The Hog Ringer Tool we offer is required to crimp the hog rings in place. The hog rings are available in packs of 2500.