The Flow 100m 0.4mm diameter fishing line is a type of fishing line that offers a good combination of strength, sensitivity and elongation. With a diameter of 0.4mm, this line is designed to be strong and wear-resistant, providing good control over lures or baits during casting and retrieving. The 100m length is sufficient for most freshwater fishing situations and some light coastal environments, giving you enough space to cast far and maneuver the fish without worrying about running out of line. The Flow line offers a good balance between strength and flexibility, making it suitable for recreational and intermediate anglers.