Sufix Super 21 FC® is a 100% fluorocarbon line that is virtually invisible in the water and thus ideal for stealthy presentations! It casts like a regular monofilament and offers exceptional handling on spinning & casting reels. Fluorocarbon line sinks four times faster than traditional nylon lines allowing the presentation to sink to the strike zone faster. Its low stretch index improves line control, presentation and bite detection and optimizes hook setting power. Super 21 FC is extremely abrasion resistant making it durable for fishing rough structure and tough-mouthed fish.