The 9/16 inch deer fence hog rings in black are used to secure your deer fencing to our monofilament wire used for tightening the deer fencing. The black 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 12" on your deer fencing. Black 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. Includes a pack of 2500.