A special manufacturing process has been used to achieve both high knot strength and flexibility, stabilizing knots for FC and PR system knots and knotting lures, and reducing the loss of strength caused by knotting. In addition, there is little tendency for the knot to curl or wrinkle, allowing for stable hooking and fighting. The refractive index of 1.42, close to that of water, reduces pressure on the target in clear waters. Achieves low water absorption of less than 0.1%, maintaining high quality. ● Color: Natural ● Material: Fluorocarbon (specific gravity: 1.78)