---
product_id: 358586540
title: "Seaguar STS Trout & Steelhead Fishing Line, Strong and Abrasion Resistant, Premium 100% Fluorocarbon Performance Fishing Leader, Virtually Invisible"
brand: "seaguar"
price: "$44.56"
currency: USD
in_stock: true
category: "Seaguar"
url: https://www.desertcart.us/products/358586540-seaguar-sts-trout-and-steelhead-fishing-line-strong-and-abrasion
store_origin: US
region: United States of America
---

# Fast sinking to reach feeding zones quickly 4 lb breaking strength for reliable hook sets Virtually invisible underwater with low refractive index Seaguar STS Trout & Steelhead Fishing Line, Strong and Abrasion Resistant, Premium 100% Fluorocarbon Performance Fishing Leader, Virtually Invisible

**Brand:** seaguar
**Price:** $44.56
**Availability:** ✅ In Stock

## Summary

> 🎣 Fish smarter, not harder — the leader that gets you bites before they know you’re there.

## Quick Answers

- **What is this?** Seaguar STS Trout & Steelhead Fishing Line, Strong and Abrasion Resistant, Premium 100% Fluorocarbon Performance Fishing Leader, Virtually Invisible by seaguar
- **How much does it cost?** $44.56 with free shipping
- **Is it available?** Yes, in stock and ready to ship
- **Where can I buy it?** [www.desertcart.us](https://www.desertcart.us/products/358586540-seaguar-sts-trout-and-steelhead-fishing-line-strong-and-abrasion)

## Best For

- seaguar enthusiasts

## Why This Product

- Trusted seaguar brand quality
- Free international shipping included
- Worldwide delivery with tracking
- 15-day hassle-free returns

## Key Features

- • **Pro-Grade Trust:** Invented by Seaguar, the fluorocarbon pioneer trusted by elite anglers worldwide.
- • **Rapid Strike Delivery:** Fast sinking line gets your lure into the strike zone before the competition.
- • **Stealth Mode Activated:** Near-invisible fluorocarbon keeps your bait undetected by the wariest trout.
- • **Precision Targeting Power:** 4 lb breaking strength ensures you land the catch, not the line.
- • **Unmatched Abrasion Resistance:** Conquer rocks, brush, and laydowns with confidence—STS outlasts monofilament.

## Overview

Seaguar STS Trout & Steelhead Fishing Line is a premium 100% fluorocarbon leader designed for serious anglers targeting trout and steelhead. With superior abrasion resistance, 4 lb breaking strength, and a smaller diameter than monofilament, it sinks fast and remains virtually invisible underwater, ensuring quicker strikes and stronger hook sets in challenging fishing environments.

## Description

Seaguar, the inventor and world leader in fluorocarbon and premium fishing line, has introduced STS, its first species-specific fluorocarbon leader material targeting Salmon, Trout and Steelhead. STS is 100% fluorocarbon leader material that delivers incredible abrasion resistance and maximum impact and knot strength, all with a smaller line diameter than monofilament. This fast-sinking line gets you in the "strike zone" quicker - and with a lower refractive index than monofilament line, it is significantly less visible underwater.

## Features

- Seaguar STS Fluorocarbon Leader gets to the fish faster and holds its own in a fight
- Delivers the knot strength, abrasion resistance, and near-invisibility needed to target finicky trout in the world's most challenging waters
- Rocks, laydowns, brush – this line comes through the hazards more reliably than monofilament, and despite its smaller diameter
- STS Fluorocarbon offers greater impact strength. Great in current; sinks fast to get your bait into the feeding zone quickly
- Seaguar is the inventor and world leader in fluorocarbon fishing lines and leaders, trusted by today’s hottest pros and anglers of all species

## Technical Specifications

| Specification | Value |
|---------------|-------|
| ASIN | B000W3634M |
| Best Sellers Rank | #30,964 in Sporting Goods ( See Top 100 in Sporting Goods ) #169 in Monofilament Fishing Line |
| Brand Name | Seaguar |
| Breaking Strength | 4 Pounds |
| Color | Clear |
| Customer Reviews | 4.7 4.7 out of 5 stars (1,318) |
| Fishing Line Type | Fluorocarbon |
| Global Trade Identification Number | 00645879100040 |
| Included Components | Fishing Line |
| Item Length | 2 Inches |
| Item Type Name | 100% Fluorocarbon Fishing Line Leader |
| Item Weight | 0.1 Pounds |
| Line Weight | 4 lb |
| Manufacturer | Kureha |
| Manufacturer Part Number | 04STS100 |
| Material Type | Fluorocarbon |
| Model Number | 04STS100 |
| Number of Items | 1 |
| Size | 4lbs/100yds |
| Strand Type | Single |
| UPC | 645879100040 |
| Unit Count | 300 Feet |

## Product Details

- **Brand:** Seaguar
- **Colour:** Clear
- **Fishing line type:** Fluorocarbon
- **Line weight:** 4 lb
- **Material:** Fluorocarbon

## Images

![Seaguar STS Trout & Steelhead Fishing Line, Strong and Abrasion Resistant, Premium 100% Fluorocarbon Performance Fishing Leader, Virtually Invisible - Image 1](https://m.media-amazon.com/images/I/71ReoSmeHEL.jpg)

## Available Options

This product comes in different **Color, Size** options.

## Questions & Answers

**Q: I need stiff leader material for hoochies behind a flasher - is this material stiff and well suited for a hoochie leader?**
A: Plenty stiff and knots a lot better than the blue and is literally 1/4 the price

**Q: Whats a good test pound leader for #20 and #30 brain main line?**
A: I have had problems with light line.  I would stay with at least #20, STS is brittle.  I stick with maxima, it’s more visible at #10, but loses much less fish.  It’s the choice between a few more hookups, but you will lose more fish on STS since it is brittle, especially with braid mainline.  Take a piece of the STS and try to break it with an overhand knot to test it before you use it.  At #10 my 5 year old could break it with his hands, so I never used it again..

**Q: What is the line diameter for 6lb?**
A: .008 inches

**Q: What diameter is the 12 pound test?**
A: .31 mm is the diameter of 12 pound test STS Trout and Seelhead.

## Frequently Bought Together

- Seaguar STS Trout/Steelhead Freshwater 100% Fluorocarbon Fishing Line Leader, Multiple Sizes
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- Berkley Trilene XL Monofilament Fishing Line

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*Product available on Desertcart United States of America*
*Store origin: US*
*Last updated: 2026-09-15*