Why you need it: helps you create secure, stable knots quickly with balanced tightness, reducing knot failure and line damage. Material and durability: built from a fiberglass nylon composite that resists deformation and wear for longterm reliability. Design and operation: manual knot tool with a double adjustment system for length and tension, delivering precise, repeatable results. Compatibility and performance: optimized for carbon and PE (braided) lines, suitable for varied fishing conditions and improved line efficiency. Easy adjustability: length and tightness can be adjusted quickly to match knot strength and line diameter for consistent results. Practical use scenarios: Tying FG knots between braided PE lines and carbon leaders on offshore or freshwater setups. Field repairs or retying during extended trips when dependable knots are required. Finetuning knot tightness for delicate fluorocarbon leaders on light tackle.