Berkley Fireline - Original Fused Fishing Bait - 14lbs/300 yd (Flame Green) Fireline = Superline! In 1996, the first “Superline” was introduced, Berkley Fireline. Not a conventional braid and certainly not a monofilament, thermally fused Fireline changed the fishing line landscape forever! The smooth handling superline - Optimized for spinning reels Superb Sensitivity - Instant feel for structure and strikes Thin Diameter - Incredible lure action and low visibility Exceptional Strength and Toughness - Microfused Dyneema® fibers are 3 to 4 times stronger than mono Hi-Vis Flame Green Freshwater Fishing Diameter: 0.009in / 0.22mm