American Fishing Wire Double 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 perferred choice of professional leader, lure and tackle manufacturers. Double Barrel Sleeves, available in Black finish, are excellent for use with big game mono leader material. The double barrel sleeves are the best choice for anglers connecting heavy fluorocarbon lines when creating custom rigs. The heavy duty nature of these crimps requires a high quality crimping tool in order to efficiently and securely crimp your rig. Available in sizes: 04F8, 7F8, 10F8 and 14F8. Please see specs below for more information on diameter and applicable line sizes.