Westin W6 ST3 Fluorocarbon 1.05mm 20m 56.5kg Clear

Westin W6 ST3 Fluorocarbon — Heavy-Duty Leader Material for Big-Fish Situations

When the target is large and the margin for error is zero, the Westin W6 ST3 Fluorocarbon in 1.05 mm / 56.5 kg delivers the backbone and near-invisibility you need to land fish that test every link in your setup.

Near-Invisible with Low Refractive Index

Fluorocarbon refracts light differently than monofilament — and the W6 ST3 takes full advantage of that. Its lower refractive index means it disappears far more convincingly underwater, keeping wary fish from second-guessing your presentation even in clear water or bright conditions.

Maximum Knot and Impact Strength at 1.05 mm

At this diameter and 56.5 kg breaking strain, the W6 ST3 is built for situations where you need absolute reliability — heavy predator fishing, large saltwater species, or robust rig construction. The ST3 (Stiffness Technology 3) rating sits in the middle of Westin's ST1–ST5 scale, offering a balanced blend of stiffness for controlled rig behaviour and enough suppleness for solid, secure knots that hold under pressure.

Choose the Right Variant

The W6 ST3 Fluorocarbon spans a wide range of diameters and spool lengths to cover everything from ultra-finesse freshwater fishing to serious big-game leader applications. Select the variant that fits your target species and rig requirements:

W6 ST3 0.14 mm / 1.4 kg — 50 m: Light trout, perch, or finesse drop-shot rigs in clear water
W6 ST3 0.17 mm / 1.7 kg — 50 m: Delicate presentations for cautious species in rivers and stillwaters
W6 ST3 0.19 mm / 2.2 kg — 50 m: Ultralight lure fishing and nymph leaders
W6 ST3 0.219 mm / 3.4 kg — 50 m: Balanced freshwater leader for mixed-species fishing
W6 ST3 0.26 mm / 4.5 kg — 50 m: Versatile leader for bass, zander, and light pike rigs
W6 ST3 0.30 mm / 6.1 kg — 50 m: Mid-range leader for general predator fishing
W6 ST3 0.343 mm / 7.9 kg — 35 m: Pike and larger zander in snaggy or weed-heavy venues
W6 ST3 0.38 mm / 9.3 kg — 30 m: Heavier predator leaders and bottom rigs
W6 ST3 0.44 mm / 11.6 kg — 25 m: Big pike, catfish, and strong-current setups
W6 ST3 0.52 mm / 16.4 kg — 35 m: Robust leader for large pike and light inshore salt species
W6 ST3 0.62 mm / 26.1 kg — 35 m: Heavier inshore and nearshore saltwater leaders
W6 ST3 0.92 mm / 49.2 kg — 20 m: Stiff, heavy leader for large predators and big-game rigs
W6 ST3 1.05 mm / 56.5 kg — 20 m: Heavy-duty leader for very large freshwater or saltwater species; strong knot integrity at extreme strain
W6 ST3 1.20 mm / 64.2 kg — 20 m: Maximum-diameter option for the biggest fish and toughest conditions