---
title: "Four Blade Serrated Eccentric Drill Bits — $13K/yr Amazon US Niche (2026) - Flapen"
canonical_url: "https://flapen.com/research/us/tools-home-improvement/four-blade-serrated-eccentric-drill-bits"
last_updated: "2026-08-09T04:02:24.244Z"
locale: en
meta:
description: "Niche score 49/100 · $13K/yr market · 27K searches/yr · $16.69 avg price. Doesn't clear our bar today. Data updated Jul 2026."
"og:description": "Niche score 49/100 · $13K/yr market · 27K searches/yr · $16.69 avg price. Doesn't clear our bar today. Data updated Jul 2026."
"og:title": "Four Blade Serrated Eccentric Drill Bits — $13K/yr Amazon US Niche (2026) - Flapen"
---
# **four blade serrated eccentric drill bits**
**Skip it**
A small market ($13K/yr) — this niche doesn't clear our bar today.
Market size 3Growth 66Conversion 35Competition 31Returns 86Price range 63Avg price 79Brand share 34Review moat 63Quality gap 83
**Returns**
**Great****1.5%**
return rate — above 5% kills the launch gate
**Quality gap**
**Great****4.2★**
avg incumbent rating — lower means beatable quality
**Avg price**
**Great****$16.69**
avg listing price — sweet spot $15–$100
**Growth**
**Good****+45.8%**
90-day search growth — must beat 0% to launch
**Review moat**
**Good****988.53**
avg incumbent reviews — the moat a new listing must climb
**Price range**
**Good****$9.26–$24.71**
cheapest to priciest tracked listing — scored on the share inside $15–$100
**Conversion**
**Okay****2.8%**
search→purchase rate — share of searches ending in a sale
**Brand share**
**Okay****84%**
top-5 brand share — brands hold most of the demand
**Competition**
**Okay****67%**
top-5 click share — leaders hold, buyers still browse
**Market size**
**Bad****$13K**
$13K/yr · 27K searches
According to Flapen's Amazon United States niche tracking, four blade serrated eccentric drill bits is a $13K/yr Amazon United States market (27K searches/yr). The top 5 brands hold 84% of demand. Demand peaks in Jul–Aug–Sep. Verdict: Skip it — 49/100.
Data updated Jul 29, 2026 · scored weekly · [~~How we score niches ~~](https://flapen.com/research/methodology)
## **four blade serrated eccentric drill bits market data**
- **Units sold / yr**
- **1K–2K**
- avg 0–100/product
- **Revenue / yr**
- **$21K–$25K**
- units × avg price
- **Conversion rate**
- **2.8%**
- **Avg BSR**
- **#102**
- **Page quality**
- **0%**
- **Prime**
- **100%**
- **Sponsored**
- **100%**
- **Out of stock**
- **19.2%**
- **Avg brand age**
- **25 months**
- **Avg seller age**
- **162 days**
## **Competition & brand share**
The top 5 products take 67% of clicks — established leaders, but buyers still shop beyond them.
**Brands**
**12 **▼falling
**Sellers**
**16**
**Top-5 brand share**
**84%**
Top 20: 100%
**Top-5 click share**
**67%**
Top 20: 100%
**Open market**
**10%**
- DKIBBITH22% - Seuphubs19% - Honkdtyun17% - CNPMBO13% - Generic13% - OPAHDYGCY5% - Open — no brand owns it (6 brands, 10%)
## **Demand & seasonality**
Weekly Amazon search volume, last 58 weeks — +45.8% search growth over the last 90 days.
2K2KPrime Day '25Spike '25Holiday '25Spike '26 seasonJulAugSepOctNovDecJanFebMarAprMayJunJul
Peak months: Jul, Aug, Sep · busiest ÷ quietest = 14.1×
[**Open Trend **](https://flapen.com/research/us/tools-home-improvement/four-blade-serrated-eccentric-drill-bits/trend)
## **Top four blade serrated eccentric drill bits search terms**
- **4 flute drill bit set**2K/yr+174.8%6.3% conv. - **4 flute drill bit**3K/yr+78.0%3.3% conv. - **eccentric drill bit set**5K/yr-43.5%7.4% conv. - **kotkka drill bits**2K/yr+645.8%2.8% conv. - **sawtooth drill bit set**2K/yr-25.9%1.2% conv. - **four blade serrated eccentric drill bits**6K/yr-17.9%7.2% conv. - **four blade serrated eccentric drill**3K/yr+25.0%0.0% conv. - **4 blade drill bit**2K/yr+24.2%2.4% conv. - **4 blade serrated eccentric drill bit**2K/yr-73.7%2.5% conv. - **four-blade serrated eccentric drill**676/yr-14.3%0.0% conv. [**All search terms **](https://flapen.com/research/us/tools-home-improvement/four-blade-serrated-eccentric-drill-bits/search-terms)
## **Top four blade serrated eccentric drill bits 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%5%$62610%$1K15%$2K20%$3K1101001K10K Reviews — right = deep review moatMarket share (90d) ≈ est. sales
Beatable (≤4.3★) Contested Strong incumbent (>4.7★)
All 15 tracked products in this niche — three views at once, no toggling.
### **Top sellers**
by 90-day click share
[1**12-Piece Four Blade Serrated Eccentric Drill Bits (5/32-1/2) High Strength Carbide Masonry Drill Bit Set for Concrete Tile Brick Glass Wood and Plastic**Seuphubs**$21.71**4.0★92 rev](https://www.amazon.com/dp/B0FKGZLFV5) [2**5 Piece Set of Four Flute Drill Bits - High Hardness Eccentric Twist Drill Bits Set for Tile Glass Ceramic Brick Metal Plastic Wood & General Concrete (6/6/8/10/12mm)**CNPMBO**$14.00**3.9★51 rev](https://www.amazon.com/dp/B0FWBXYCLR) [3**DKIBBITH 4-Flute Serrated Masonry Drill Bit Set 11-Piece Black - 3/16 to 1/2 for Concrete Tile Brick Glass Ceramic Wood.**DKIBBITH**$19.95**4.4★2,768 rev](https://www.amazon.com/dp/B0FGDBW8K2) [4**6 Pcs Four-Flute Sawtooth Eccentric Twist Drill Bit Concrete and Masonry Drill Bit Set Set for Concrete/Glass/Tile/Wood/Metal Hexagonal Shank Drills Short bits (4/5/6/8/10/12mm)**Generic**$11.02**4.3★34 rev](https://www.amazon.com/dp/B0FMY8Z547) [5**Honkdtyun 5 Count Four Edged Serrated Eccentric Drill Bit Set New Four-Flute Sawtooth Eccentric Drill Bit for Stone Glass Concrete Wood Brick Metal (5pack)**Honkdtyun**$11.52**4.0★87 rev](https://www.amazon.com/dp/B0F4D12YR7)
**~~View all top sellers →~~**
### **Newest**
by launch date
[**New Four-Flute Sawtooth Eccentric Drill Bit 2025 Upgraded Four Blade Serrated Eccentric Drill High Hardness Skewed Head Drill Set Multifunction Suitable for Stone Glass Concrete (4/5/6/8/10/12mm)**Imgjsx**$14.39**42 rev8mo ago](https://www.amazon.com/dp/B0F8HD6GSR) [**5 Piece Set of Four Flute Drill Bits - High Hardness Eccentric Twist Drill Bits Set for Tile Glass Ceramic Brick Metal Plastic Wood & General Concrete (6/6/8/10/12mm)**CNPMBO**$14.00**51 rev8mo ago](https://www.amazon.com/dp/B0FWBXYCLR) [**6-Piece 4-Flute Serrated Eccentric Drill Bit Set Carbide Hex Shank**OPAHDYGCY**$14.56**1 rev9mo ago](https://www.amazon.com/dp/B0FX3743Y9) [**Mgtgbao 10PC Black 1/4 Upgraded 4-Flute Serrated Carbide Masonry Drill Bit Set 6mm Serrated Concrete Drill Bit for Plastic Glass Brick Cement Tile Marble Wood.**Mgtgbao**$18.62**94 rev10mo ago](https://www.amazon.com/dp/B0FR56QWYL) [**LITDDDW 10pcs Masonry Drill Bit Set Concrete Drill Bit Set Four Blade Serrated Eccentric Carbide Drill Bits for Brick/Plastic/Ceramics/Tile/Wood/Marble 3/16-1/2**LITDDDW**$21.93**126 rev10mo ago](https://www.amazon.com/dp/B0FQ5H2DJP)
**~~View all new products →~~**
### **Trending**
90-day click momentum
[**6-Piece 4-Flute Serrated Eccentric Drill Bit Set Carbide Hex Shank**OPAHDYGCY**$14.56**5.0★**▲ 383%**](https://www.amazon.com/dp/B0FX3743Y9) [**Mgtgbao 10PC Black 1/4 Upgraded 4-Flute Serrated Carbide Masonry Drill Bit Set 6mm Serrated Concrete Drill Bit for Plastic Glass Brick Cement Tile Marble Wood.**Mgtgbao**$18.62**4.3★**▲ 353%**](https://www.amazon.com/dp/B0FR56QWYL) [**DKIBBITH 4-Flute Serrated Masonry Drill Bit Set 11-Piece Black - 3/16 to 1/2 for Concrete Tile Brick Glass Ceramic Wood.**DKIBBITH**$19.95**4.4★**▲ 264%**](https://www.amazon.com/dp/B0FGDBW8K2) [**5 Piece Set of Four Flute Drill Bits - High Hardness Eccentric Twist Drill Bits Set for Tile Glass Ceramic Brick Metal Plastic Wood & General Concrete (6/6/8/10/12mm)**CNPMBO**$14.00**3.9★**▲ 249%**](https://www.amazon.com/dp/B0FWBXYCLR) [**BGTEC Four Blade Serrated Masonry Drill Bit Set 10PCS Tile Drill Bits**BGTEC**$24.71**4.7★**▲ 161%**](https://www.amazon.com/dp/B0FPLR13K6)
**~~View all trending →~~**
## **What buyers say about four blade serrated eccentric drill bits**
What buyers praise and complain about, mined from review topics.
### **What buyers love **
**Quality-Overall**20%
*“Great quality for the price and a useful set for DIY projects, repairs, and home improvements”*
**Value For Money**12%
*“Excellent price”*
**Advertised Vs Actual Product**11%
*“As advertised”*
**Precision Of Cut**10%
*“The bits cut cleanly, are durable, and fit my drill securely”*
**Durability**8%
*“Durable construction that holds up well under use”*
**Size-Overall**7%
*“Great size”*
**Strength**5%
*“Heavy duty”*
**Ease Of Use**4%
*“Easy to use”*
**Sharpness**4%
*“The bits are sharp”*
**Material Quality**3%
*“Good for concrete”*
### **What buyers complain about **
**Quality-Overall**30%
*“Poor Quality”*
**Durability**26%
*“they are not durable”*
**Advertised Vs Actual Product**5%
*“Not as advertised”*
**Precision Of Cut**5%
*“This bit was way hard to cut through metal”*
**Strength**5%
*“So not sturdy or for long usage if you are drilling into concrete”*
**Value For Money**5%
*“Cheap price only good for one to two uses per drill bit”*
**Material Quality**4%
*“frustrating when used on ceramic”*
**Size-Overall**3%
*“Not even correct sizes”*
**Functionality-Overall**2%
*“It doesnt work try to use it on tile couldnt get through at all”*
**Heating**2%
*“wasnt even warm”*
### **Top return reasons **
**Defective Material/Parts**24%
**Size-Overall**15%
**Functionality-Overall**14%
**Compatibility-Overall**12%
**Advertised Vs Actual Product**7%
**Durability**7%
**Value For Money**7%
**Quality-Overall**4%
**Sharpness**3%
**Material Quality**3%
## **Common questions**
- **Is four blade serrated eccentric drill bits profitable to sell on Amazon United States?**
- The niche generates $13K/yr across 15 tracked products. 1 of 7 products launched in the last 360 days are still selling. 90-day search growth is +45.8%. Flapen's verdict: Skip it (49/100).
- **How competitive is the four blade serrated eccentric drill bits niche?**
- 12 brands and 16 sellers compete. The top 5 products take 67% of clicks and top 5 brands hold 84% of demand.
- **What do buyers complain about in four blade serrated eccentric drill bits?**
- Top complaints mined from reviews: Quality-Overall, Durability, Advertised Vs Actual Product. The return rate is 1.5%.
- **When does demand for four blade serrated eccentric drill bits peak?**
- Demand peaks in Jul–Aug–Sep; the busiest month runs 14.1× the quietest.
- **What does it cost to enter the four blade serrated eccentric drill bits niche?**
- Listings span $9.26–$24.71; the average listing price is $16.69 (sweet spot $15–$100). The average incumbent carries 989 reviews — the moat a new listing must climb.
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