Sufix Advance Fluorocarbon is high-performance fluorocarbon designed for use as either mainline or leader. Just like Sufix's Advance Monofilament, Sufix Advance Fluorocarbon employs Sufix's proprietary "Gel Phase Technology" to create a fishing line that exhibits the best handling, sensitivity, performance, and clarity to meet the needs of expert anglers and casual fisherman alike. Made using 100% fluorocarbon precursor, Sufix Advance Fluorocarbon is virtually invisible underwater, making it a great choice for finicky fish. Additionally, it has a higher density index, meaning it sinks faster and can get your presentation to the strike zone 4 times more quickly than traditional nylon-based monofilament. The line's inherent molecular properties and Sufix's exclusive G2 precision winding also make this fluorocarbon virtually memory free. Available in pound tests ranging from 4 to 30 pound.