K9 Fluorocarbon · Technical DatasheetOriginal Fluoro A fluorocarbon blend built for dependable castability, dialed stretch for better hooksets, and rugged abrasion resistance — trip after trip, fresh or salt. TypeFluorocarbon blend Test Range4 – 25 lb Diameter0.17 – 0.45 mm Spools300 · 550 · 2,000 yd ColorClear WaterFresh + Salt Performance profile Relative character of this line within the K9 lineup — not lab figures. CastabilityExcellent — low memory Abrasion resistanceStrong — rock, grass, wood SensitivityStrong StretchDialed — cushions hooksets Line memoryLow Underwater profileLow-visibility clear Test & diameter chart Nine sizes, measured. Pick by technique. Lb test Dia (mm) Dia (in) Best for Spools 4 lb 0.17 .0067 Panfish & trout, ultralight presentations 300 · 550 · 2,000 yd 6 lb 0.20 .0079 Finesse — ned, dropshot, wacky 300 · 550 · 2,000 yd 8 lb 0.23 .0091 Shaky heads, jerkbaits, light cranks 300 · 550 · 2,000 yd 10 lb 0.26 .0102 Jerkbaits, swim jigs, light Texas rigs 300 · 550 · 2,000 yd 12 lb 0.29 .0114 Cranks, chatterbaits, spinnerbaits 300 · 550 · 2,000 yd 14 lb 0.33 .0130 Bigger moving baits around cover 300 · 550 · 2,000 yd 17 lb 0.37 .0146 Swimbaits, jigs in cover 300 · 550 · 2,000 yd 20 lb 0.41 .0161 Big baits, flipping, inshore 300 · 550 · 2,000 yd 25 lb 0.45 .0177 Glide baits & XL swimbaits, heavy cover 550 · 2,000 yd Bulk 550 and 2,000-yard spools keep frequent re-spoolers stocked for a season. Rigging notes Terminal knots: Palomar, improved clinch or San Diego Jam. Runs clean on spinning or casting reels thanks to the low-memory build. Also works as a leader over K9 braid for power-plus-stealth combos. Field notes Optimized stretch cushions surges and drives better hooksets on moving baits. A blend, not 100% fluorocarbon — tuned for balanced performance and castability. Reliable across bass, walleye and inshore species. Frequently asked questions Is this 100% fluorocarbon?Original Fluoro is a fluorocarbon blend designed for balanced performance and castability. For 100% fluorocarbon, see K9 Pro100.What techniques is it best for?It excels with moving baits, large swimbaits and glide baits, and in rugged cover — the dialed stretch and abrasion resistance do the work.Spinning or casting?Both. The low-memory design supports smooth casting and clean line management on a wide range of reels. Complete the system Build the combo: K9 braid on the spool, Original Fluoro at the business end — or step up to 100% fluoro. 8-Strand SuperBraid →Pro100 Fluorocarbon → K9 Original Fluoro — clear fluorocarbon-blend fishing line in 4 to 25 lb test (0.17–0.45 mm) on 300, 550 and 2,000-yard spools. Low-memory, abrasion-resistant line with optimized stretch for crankbaits, chatterbaits, swimbaits and glide baits in freshwater and saltwater.
