Size J For use with: 60 lb. - 100 lb. Line (for use with any manufactures line) Line Diameter: 0.74 - 1.00 mm Trusted by professional and commercial fisherman around the world Use Jinkai crimping pliers for best results Jinkai Sleeves are made from a special aluminum alloy that is easy to crimp and resists electro-corrosion in saltwater. The soft metal and oval shape work together to provide a permanent crimp without compromising line strength. A wide variety of sizes coordinate for use with all lb. tests of Monofiliment, Copolymer and Fluorocarbon fishing lines