---
title: "Kobalt Weed Eater String — $58K/yr Amazon US Niche (2026) - Flapen"
canonical_url: "https://flapen.com/research/us/patio-lawn-garden/kobalt-weed-eater-string"
last_updated: "2026-08-11T11:09:11.430Z"
locale: en
meta:
description: "Niche score 51/100 · $58K/yr market · 43K searches/yr. Brand-locked demand (top 5 brands take 100% of clicks) keeps it on the watch list. Data updated Jul 2026."
"og:description": "Niche score 51/100 · $58K/yr market · 43K searches/yr. Brand-locked demand (top 5 brands take 100% of clicks) keeps it on the watch list. Data updated Jul 2026."
"og:title": "Kobalt Weed Eater String — $58K/yr Amazon US Niche (2026) - Flapen"
---
# **kobalt weed eater string**
**Worth a look**
Shows demand growing +376.9% this quarter, but brand-locked demand (top 5 brands take 100% of clicks) keeps it on the watch list.
Market size 14Growth 100Conversion 84Competition 3Returns 59Price range 55Avg price 71Brand share 0Review moat 85Quality gap 84
**Growth**
**Incredible****+376.9%**
90-day search growth — must beat 0% to launch
**Review moat**
**Great****303.17**
avg incumbent reviews — the moat a new listing must climb
**Conversion**
**Great****9.2%**
search→purchase rate — share of searches ending in a sale
**Quality gap**
**Great****4.2★**
avg incumbent rating — lower means beatable quality
**Avg price**
**Good****$14.50**
avg listing price — sweet spot $15–$100
**Returns**
**Good****2.7%**
return rate — above 5% kills the launch gate
**Price range**
**Good****$11.15–$19.73**
cheapest to priciest tracked listing — scored on the share inside $15–$100
**Market size**
**Bad****$58K**
$58K/yr · 43K searches
**Competition**
**Bad****96%**
top-5 click share — a locked-up shelf
**Brand share**
**Bad****100%**
top-5 brand share — brand-locked demand
**Signals**[** Trending**](https://flapen.com/research/niches?market=us&signal=trending "Search growth > 100% (90d)")
According to Flapen's Amazon United States niche tracking, kobalt weed eater string is a $58K/yr Amazon United States market (43K searches/yr). The top 5 brands hold 100% of demand. Demand peaks in May–Jun–Jul–Aug. Verdict: Worth a look — 51/100.
Data updated Jul 16, 2026 · scored weekly · [~~How we score niches ~~](https://flapen.com/research/methodology)
## **kobalt weed eater string market data**
- **Units sold / yr**
- **4K–5K**
- avg 500–750/product
- **Revenue / yr**
- **$58K–$73K**
- units × avg price
- **Conversion rate**
- **9.2%**
- **Avg BSR**
- **#439**
- **Page quality**
- **0%**
- **Prime**
- **100%**
- **Sponsored**
- **83%**
- **Out of stock**
- **25.0%**
- **Avg brand age**
- **29 months**
- **Avg seller age**
- **175 days**
## **Competition & brand share**
The top 5 products capture 96% of clicks — a locked-up shelf that new listings rarely crack.
**Brands**
**5 **▼falling
**Sellers**
**10**
**Top-5 brand share**
**100%**
Top 20: 100%
**Top-5 click share**
**96%**
Top 20: 100%
**Open market**
**0%**
- Kobalt46% - QUASION31% - Eyoloty11% - Kaberalty9% - Evenlinkics4%
## **Demand & seasonality**
Weekly Amazon search volume, last 104 weeks — +376.9% search growth over the last 90 days.
2K2KSpike '25Prime Day '25Spike '26 seasonSepDecMarJunAugNovMarMay
Peak months: May, Jun, Jul, Aug · busiest ÷ quietest = 32.6×
[**Open Trend **](https://flapen.com/research/us/patio-lawn-garden/kobalt-weed-eater-string/trend)
## **Top kobalt weed eater string search terms**
- **kobalt weed eater string**29K/yr+506.2%4.1% conv. - **kobalt string trimmer line**3K/yr+362.9%3.1% conv. - **kobalt trimmer line**3K/yr+183.3%2.8% conv. - **kobalt replacement spool**3K/yr+234.7%0.5% conv. - **kobalt trimmer string**3K/yr+239.3%3.8% conv. - **kobalt 40v weed eater string**2K/yr+192.7%3.3% conv. [**All search terms **](https://flapen.com/research/us/patio-lawn-garden/kobalt-weed-eater-string/search-terms)
## **Top kobalt weed eater string products on Amazon**
Each bubble is one product — market share against review moat; bubble size tracks estimated sales, color grades how beatable the incumbent looks.
0%15%$9K30%$17K45%$26K60%$35K101001K10K Reviews — right = deep review moatMarket share (90d) ≈ est. sales
Beatable (≤4.3★) Contested Strong incumbent (>4.7★)
All 6 tracked products in this niche — three views at once, no toggling.
### **Top sellers**
by 90-day click share
[1**Kobalt 20-ft Spool 0.065-in Trimmer Line - for KST - 120X string trimmer**Kobalt**$14.83**4.0★1,431 rev](https://www.amazon.com/dp/B01E7JQSSC) [2**QUASION KST-120X Weed Eater String Trimmer Line 0.065 20Ft 6-Pack Compatible with Kobalt 40V KST 120X-06 KST 2040-06 Weed Wacker String Trimmer Pre-Wound Dual Line Spool**QUASION**$13.51**4.2★173 rev](https://www.amazon.com/dp/B0BTMHR1B8) [3**Eyoloty KSLA 58040-03 Pre-Cut Twisted Line 0.080 208Ft Compatible with Kobalt 5218445 4926600 623439 1130001 820915 1160325 String Trimmers KAL 580-06 Replacement Trimmers Line for Kobalt (12-Pack)**Eyoloty**$19.73**4.2★42 rev](https://www.amazon.com/dp/B0D224R9ZB) [4**Kaberalty KLS 124-03 String Trimmer Replacement Dual Line 0.080 16ft Compatible with Kobalt 24V KST 1124B-03 KST 2024A-03 KST 2224B-03 and KST 4024A-03 KST 4024AB-03 (Item# 1504979 1137837 3488480)**Kaberalty**$14.14**4.2★80 rev](https://www.amazon.com/dp/B0CXHJ4G8X) [5**QUASION KLS 124-03 Spooled Trimmer Line 0.080-in 16Ft 3-Pack Compatible with Kobalt 24-Volt Max Weed Wacker String Trimmer Dual-line Replacement Spool Compatible with Kobalt Weed Eater String**QUASION**$13.62**4.0★79 rev](https://www.amazon.com/dp/B0CNVBJS23)
**~~View all top sellers →~~**
### **Newest**
by launch date
[**Evenlinkics KST 120X-06 Replacement SpoolCompatible Kobalt Weed Eaterfor Kobalt KST 120X Trimmer Spool for Kobalt Weed Eater String (6 Spools)**Evenlinkics**$11.15**14 rev1y ago](https://www.amazon.com/dp/B0FD3S8KQZ) [**Eyoloty KSLA 58040-03 Pre-Cut Twisted Line 0.080 208Ft Compatible with Kobalt 5218445 4926600 623439 1130001 820915 1160325 String Trimmers KAL 580-06 Replacement Trimmers Line for Kobalt (12-Pack)**Eyoloty**$19.73**42 rev2y ago](https://www.amazon.com/dp/B0D224R9ZB) [**Kaberalty KLS 124-03 String Trimmer Replacement Dual Line 0.080 16ft Compatible with Kobalt 24V KST 1124B-03 KST 2024A-03 KST 2224B-03 and KST 4024A-03 KST 4024AB-03 (Item# 1504979 1137837 3488480)**Kaberalty**$14.14**80 rev2y ago](https://www.amazon.com/dp/B0CXHJ4G8X) [**QUASION KLS 124-03 Spooled Trimmer Line 0.080-in 16Ft 3-Pack Compatible with Kobalt 24-Volt Max Weed Wacker String Trimmer Dual-line Replacement Spool Compatible with Kobalt Weed Eater String**QUASION**$13.62**79 rev2y ago](https://www.amazon.com/dp/B0CNVBJS23) [**QUASION KST-120X Weed Eater String Trimmer Line 0.065 20Ft 6-Pack Compatible with Kobalt 40V KST 120X-06 KST 2040-06 Weed Wacker String Trimmer Pre-Wound Dual Line Spool**QUASION**$13.51**173 rev3y ago](https://www.amazon.com/dp/B0BTMHR1B8)
**~~View all new products →~~**
### **Trending**
90-day click momentum
[**QUASION KLS 124-03 Spooled Trimmer Line 0.080-in 16Ft 3-Pack Compatible with Kobalt 24-Volt Max Weed Wacker String Trimmer Dual-line Replacement Spool Compatible with Kobalt Weed Eater String**QUASION**$13.62**4.0★**▲ 15%**](https://www.amazon.com/dp/B0CNVBJS23) [**Kobalt 20-ft Spool 0.065-in Trimmer Line - for KST - 120X string trimmer**Kobalt**$14.83**4.0★**▲ 10%**](https://www.amazon.com/dp/B01E7JQSSC) [**Eyoloty KSLA 58040-03 Pre-Cut Twisted Line 0.080 208Ft Compatible with Kobalt 5218445 4926600 623439 1130001 820915 1160325 String Trimmers KAL 580-06 Replacement Trimmers Line for Kobalt (12-Pack)**Eyoloty**$19.73**4.2★**— 9%**](https://www.amazon.com/dp/B0D224R9ZB) [**QUASION KST-120X Weed Eater String Trimmer Line 0.065 20Ft 6-Pack Compatible with Kobalt 40V KST 120X-06 KST 2040-06 Weed Wacker String Trimmer Pre-Wound Dual Line Spool**QUASION**$13.51**4.2★**— 4%**](https://www.amazon.com/dp/B0BTMHR1B8) [**Kaberalty KLS 124-03 String Trimmer Replacement Dual Line 0.080 16ft Compatible with Kobalt 24V KST 1124B-03 KST 2024A-03 KST 2224B-03 and KST 4024A-03 KST 4024AB-03 (Item# 1504979 1137837 3488480)**Kaberalty**$14.14**4.2★**▼ 15%**](https://www.amazon.com/dp/B0CXHJ4G8X)
**~~View all trending →~~**
## **What buyers say about kobalt weed eater string**
What buyers praise and complain about, mined from review topics.
### **What buyers love **
**Size-Overall**24%
*“Perfect fit”*
**Quality-Overall**24%
*“Very good trimmer lines string”*
**Value For Money**18%
*“Cost far less than the OEM string recommended by the string line trimmer manufacturer”*
**Advertised Vs Actual Product**13%
*“As described”*
**Functionality-Overall**7%
*“It works fine”*
**Ease Of Use**5%
*“Easy and perfect”*
**Cutting/Trimming**4%
*“It's convenient having the pre cut line”*
### **What buyers complain about **
**Quality-Overall**29%
*“Dont buy this cheap crap”*
**Size-Overall**21%
*“Seems like it doesnt fit very well”*
**Thickness**7%
*“Garbage cheap thin line is not”*
**Jamming/Clogging**7%
*“Bump head gets jammed”*
**Natural Resource Wastage**5%
*“what a waste”*
**Assembly/Installation**5%
*“it's difficult to install”*
**Durability**5%
*“Instantly falls apart”*
**Strength**5%
*“Breaks rather easy”*
### **Top return reasons **
**Size-Overall**85%
**Advertised Vs Actual Product**12%
**Functionality-Overall**4%
**Thickness**1%
**Add-Ons/Attachments**1%
**Cutting/Trimming**1%
**Mechanism Issues**1%
**Value For Money**1%
**Jamming/Clogging**0%
## **Common questions**
- **Is kobalt weed eater string profitable to sell on Amazon United States?**
- The niche generates $58K/yr across 6 tracked products. 90-day search growth is +376.9%. Flapen's verdict: Worth a look (51/100).
- **How competitive is the kobalt weed eater string niche?**
- 5 brands and 10 sellers compete. The top 5 products take 96% of clicks and top 5 brands hold 100% of demand.
- **What do buyers complain about in kobalt weed eater string?**
- Top complaints mined from reviews: Quality-Overall, Size-Overall, Thickness. The return rate is 2.7%.
- **When does demand for kobalt weed eater string peak?**
- Demand peaks in May–Jun–Jul–Aug; the busiest month runs 32.6× the quietest.
- **What does it cost to enter the kobalt weed eater string niche?**
- Listings span $11.15–$19.73; the average listing price is $14.50 (sweet spot $15–$100). The average incumbent carries 303 reviews — the moat a new listing must climb.
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