Euro Nymph Mono Core

Built with a proven taper and thin, hard monofilament core, which transfers energy better and reduces line sag. Designed for modern nymphing techniques. 

- Modern Nymphing Techniques 
- Ultra-thin Diameter
- Supple 

WATER: Freshwater
LINE: Floating
TAPER: Level / Double Taper
LENGTH: 90ft
CORE: Monofilament 
SPECIES: Trout / Grayling

Size .017 - LEVEL

United States deliveries usually take 3-8 business days.

International deliveries can take up to 7 - 18 days.

If you have any question about shipping Contact Us our customer service department is here to help.

 P65 - WARNING: Cancer and Reproductive Harm

Euro Nymph Mono Core Breakdown

Our Euro Nymph Mono Core fly lines are supple, sensitive, extremely shootable and durable.

Ideal for all euro and modern nymphing techniques, this line is easy to handle, extremely sensitive and has a low friction coefficient to keep your nymphs slinging smoothly all day long.

This line performs at the highest level throughout every season. Pair this line with our Euro Nymph Leader Material or build a nymph rig directly off the fly line, there are endless possibilities. This line is finished in gecko green giving anglers a stealthy approach. Make your time on the water more productive with the Euro Nymph Braid Mono Core fly lines.

SPECIES: Trout / Grayling

Freshwater Floating Level / Double Taper Monofilament

Level .017 in. 20 gr. 90 ft.
Level .022 in. 40 gr. 90 ft.
DT .017 in. 60 gr. 90 ft.
DT .022 in. 90 gr. 90 ft.


Shooting Technology Icon

ST coating delivers a reduced-friction performance with a glass-smooth finish and remains a key element in line slickness over its life span.

Cold Temperature Technology Icon

Ideal use in 30-50 degree (F) temperatures.

Warm Temperature Technology Icon

Ideal use in 50 - 70 degree (F) temperatures.


Our Euro Nymph Mono Core is built for cold water environments and will perform best in temperatures between 30 and 70 degrees (F).

The mono core is slightly stiffer than the braid core, adding extra shoot-ability and reducing sag between your rod guides.

Often times, our nymphing lines get paired with monofilament extensions or sighter material so there is really no need for welded loops. The best knot connections we find from Fly Line to our Euro Nymph Leader Material are the Uni or Nail Knot.

Cleaning your fly line is very important especially when fishing saltwater. Simply pull line off your reel into a clean bucket or tub of freshwater. Put roughly 1oz or more of Cortland’s Line Cleaner solution onto a clean rag or towel. Firmly squeeze the towel with Pro Line Cleaner around the line and slowly pull line through the towel. You should be able to see dirt or discolored streaks on the towel when finished.

Learn more about Cortland's Fly Line Cleaner Lubricant & Pads.

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100% of reviewers would recommend this product to a friend
1 Review
Reviewed by Alexander L.
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I recommend this product
Rated 5 out of 5
Review posted

Mono core line

Awesome line! Super supple , easy to mend

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