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KastKing

KastKing Fluorokote Fluorocarbon Coated Fishing Line

  • Line Weight: 4 lb
  • Size: 4LB(300Yard)
  • Length: 300 Yards
  • Pieces: 900 feet

Last refreshed Aug 4, 2026 · Based on the Amazon listing and published specifications, not hands-on testing.

Our verdict

A 4 lb test PVDF fluorocarbon line on a 300-yard clear spool, built for finesse presentations rather than heavy tackle.

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ASIN: B017AR85Y8Category: Fluorocarbon Fishing Lines

Overview

This KastKing line is a 4 lb test fluorocarbon line made from polyvinylidene fluoride (PVDF), the material that makes it a true fluorocarbon rather than a coated monofilament. It comes on a 300-yard clear spool.

Fluorocarbon lines are generally denser and less visible underwater than standard monofilament, which is why anglers reach for them on clear water or spooky fish. At 4 lb test, this spool is built for light lines and finesse presentations rather than heavy cover or big fish.

  • PVDF fluorocarbon material
  • 4 lb line test
  • 300-yard (900 ft) spool
  • Clear finish

Who it's for

Fits anglers doing light-line, finesse presentations who want a true fluorocarbon rather than a blend. Not suited to heavy cover fishing or species that need higher line strength.

Pros and cons

Pros
  • True PVDF fluorocarbon rather than a coated blend
  • 300-yard spool gives plenty of line for repeated re-spooling
  • Light 4 lb test suits finesse presentations
Cons
  • 4 lb test limits it to light-line applications
  • Not built for heavy cover or larger fish

Performance notes

PVDF construction is what makes this a genuine fluorocarbon rather than a coated line, generally giving it lower visibility underwater and more density than monofilament of the same diameter. At 4 lb test, it is sized for light spinning setups rather than baitcasting or heavy cover.

Specifications

BrandKastKing
Dimensions & fit
Line Weight4 lblower than 89% of 39 fluorocarbon fishing lines
Size4LB(300Yard)
Length300 Yards
Item Weight0.01 Ounces
Construction & materials
MaterialPolyvinylidene Fluoride
ColorClear
Included components
Pieces900 feet
Other details
TechniqueFluorocarbon

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Frequently asked questions

Is the KastKing FBA_KK-FK line a true fluorocarbon?

Yes, it is made from PVDF, the material that defines fluorocarbon line rather than a coated blend.

What line weight does this spool come in?

4 lb test.

How much line is on the spool?

300 yards, listed as 900 feet.