Diameter chart, reel capacity & backing guide
FluoroKote combines a copolymer core with a fluorocarbon outer coating. It is not solid fluorocarbon. The checked current product offers 300-yard packages; its official chart provides the diameter pairs for these 6-20 lb rows.
FluoroKote is a choice for anglers seeking KastKing's coated-copolymer construction as a working line. Do not assume it has the same density, handling or diameter as a 100% fluorocarbon product simply because the box says fluorocarbon coated. For the checked 10 lb size, the manufacturer lists 0.011 in and 0.28 mm; calculate fill from that size, not another KastKing formula.
Exact current 300-yard FluoroKote variants matched to the manufacturer chart. This is Copolymer, not pure Fluorocarbon.
| Strength | Inches | mm | Spools (yd) |
|---|---|---|---|
| 6 lb | 0.008 | 0.220 | 300 |
| 8 lb | 0.009 | 0.230 | 300 |
| 10 lb | 0.011 | 0.280 | 300 |
| 12 lb | 0.012 | 0.300 | 300 |
| 15 lb | 0.013 | 0.330 | 300 |
| 17 lb | 0.014 | 0.350 | 300 |
| 20 lb | 0.015 | 0.380 | 300 |
Choose FluoroKote strength for your rod and presentation. The 6-8 lb sizes and 17-20 lb sizes are physically different choices, especially on a compact spinning reel.
Treat the coating as a construction feature, not proof of invisibility, superior abrasion performance or an independent casting advantage.
Only 300-yard variants were verified on the current product. The artwork's wider 150/300/500-yard range is not evidence that all three lengths can be selected now at each strength.
This is a source-based specification and setup guide, not a hands-on review or comparative performance test.
100% fluorocarbon coated describes the coating, not the entire line. Match the FluoroKote package rather than a Kovert fluorocarbon product.
Estimate full capacity or choose a shorter working section over backing. Allow enough working line to keep the backing junction out of routine casts and runs.
Stop at the reel's fill clearance under even tension. A theoretical capacity fit does not guarantee that a thick coated line will handle well on a small spool.
No. The official construction is a polymer/copolymer core coated with 100% fluorocarbon. This guide classifies it as Copolymer.
Not in the current exact product variants checked here. Artwork mentions them, but these rows use only selectable 300-yard packages.
KastKing also markets leader use, but that does not make the coating solid fluorocarbon. Choose the section for its actual construction, diameter and your rig.
Checked September 13, 2026 against the official product information linked below. Inch and mm chart pairs are preserved as independently rounded published values. At 6 lb the coarse pair is .008 in/.22 mm, not an exact conversion. Offered specifications do not establish current stock; this is not an independent diameter measurement.
Calculations use the catalog's listed inch diameters. Published inch and millimeter values may differ slightly because of rounding.
Diameter chart, reel capacity & backing guide
FluoroKote combines a copolymer core with a fluorocarbon outer coating. It is not solid fluorocarbon. The checked current product offers 300-yard packages; its official chart provides the diameter pairs for these 6-20 lb rows.
FluoroKote is a choice for anglers seeking KastKing's coated-copolymer construction as a working line. Do not assume it has the same density, handling or diameter as a 100% fluorocarbon product simply because the box says fluorocarbon coated. For the checked 10 lb size, the manufacturer lists 0.011 in and 0.28 mm; calculate fill from that size, not another KastKing formula.
Exact current 300-yard FluoroKote variants matched to the manufacturer chart. This is Copolymer, not pure Fluorocarbon.
| Strength | Inches | mm | Spools (yd) |
|---|---|---|---|
| 6 lb | 0.008 | 0.220 | 300 |
| 8 lb | 0.009 | 0.230 | 300 |
| 10 lb | 0.011 | 0.280 | 300 |
| 12 lb | 0.012 | 0.300 | 300 |
| 15 lb | 0.013 | 0.330 | 300 |
| 17 lb | 0.014 | 0.350 | 300 |
| 20 lb | 0.015 | 0.380 | 300 |
Choose FluoroKote strength for your rod and presentation. The 6-8 lb sizes and 17-20 lb sizes are physically different choices, especially on a compact spinning reel.
Treat the coating as a construction feature, not proof of invisibility, superior abrasion performance or an independent casting advantage.
Only 300-yard variants were verified on the current product. The artwork's wider 150/300/500-yard range is not evidence that all three lengths can be selected now at each strength.
This is a source-based specification and setup guide, not a hands-on review or comparative performance test.
100% fluorocarbon coated describes the coating, not the entire line. Match the FluoroKote package rather than a Kovert fluorocarbon product.
Estimate full capacity or choose a shorter working section over backing. Allow enough working line to keep the backing junction out of routine casts and runs.
Stop at the reel's fill clearance under even tension. A theoretical capacity fit does not guarantee that a thick coated line will handle well on a small spool.
No. The official construction is a polymer/copolymer core coated with 100% fluorocarbon. This guide classifies it as Copolymer.
Not in the current exact product variants checked here. Artwork mentions them, but these rows use only selectable 300-yard packages.
KastKing also markets leader use, but that does not make the coating solid fluorocarbon. Choose the section for its actual construction, diameter and your rig.
Checked September 13, 2026 against the official product information linked below. Inch and mm chart pairs are preserved as independently rounded published values. At 6 lb the coarse pair is .008 in/.22 mm, not an exact conversion. Offered specifications do not establish current stock; this is not an independent diameter measurement.
Calculations use the catalog's listed inch diameters. Published inch and millimeter values may differ slightly because of rounding.
