Sleeves are made of copper and are available in Nickel plated and Black oxidized. Double Barrel and Thin Wall Double Barrel Sleeves, available in Black finish, are excellent for use with big game mono leader material. Sleeves can be fitted to wire, monofilament, and other various lines. Burr-free nonabrasive finish combined with high strength and corrosion resistance makes AFW’s sleeves the preferred choice of professional leader, lure, and tackle manufacturers. Packaged in Retail Packs, 100/mini bulk, and 1,000 piece packages for resale, and 5,000 piece bulk packs for tackle manufacturers.