7 inch grinder
Skip itPrices mostly outside the sweet spot ($64.08–$323.92) — this niche doesn't clear our bar today.
Review moat
Great192.2avg incumbent reviews — the moat a new listing must climb
Quality gap
Great4.2★avg incumbent rating — lower means beatable quality
Avg price
Good$159.07avg listing price — sweet spot $15–$100
Returns
Okay3.1%return rate — above 5% kills the launch gate
Market size
Okay$254K$254K/yr · 53K searches
Conversion
Okay3.0%search→purchase rate — share of searches ending in a sale
Competition
Okay63%top-5 click share — leaders hold, buyers still browse
Brand share
Okay83%top-5 brand share — brands hold most of the demand
Growth
Bad-1.2%90-day search growth — must beat 0% to launch
Price range
Bad$64.08–$323.92cheapest to priciest tracked listing — scored on the share inside $15–$100
According to Flapen's Amazon United States niche tracking, 7 inch grinder is a $254K/yr Amazon United States market (53K searches/yr). The top 5 brands hold 83% of demand. Verdict: Skip it — 44/100.
Data updated Jul 30, 2026 · scored weekly · How we score niches
7 inch grinder market data
- Units sold / yr
- 1K–2K
- avg 0–100/product
- Revenue / yr
- $199K–$239K
- units × avg price
- Conversion rate
- 3.0%
- Avg BSR
- #246
- Page quality
- 0%
- Prime
- 85%
- Sponsored
- 55%
- Out of stock
- 7.1%
- Avg brand age
- 46 months
- Avg seller age
- 154 days
Competition & brand share
The top 5 products take 63% of clicks — established leaders, but buyers still shop beyond them.Brands
13 flat
Sellers
71
Top-5 brand share
83%
Top 20: 100%
Top-5 click share
63%
Top 20: 100%
Open market
13%
- DEWALT37%
- VEVOR17%
- Makita13%
- ProMaker10%
- Genesis5%
- Metabo HPT4%
- Open — no brand owns it (7 brands, 13%)
Demand & seasonality
Weekly Amazon search volume, last 104 weeks — -1.2% search growth over the last 90 days.No pronounced peak months · busiest ÷ quietest = 1.4×
Top 7 inch grinder search terms
- 7 grinder14K/yr
- 7 inch angle grinder13K/yr
- 7 inch grinder14K/yr
- 7 angle grinder9K/yr
- angle grinder 7 inch4K/yr
Top 7 inch grinder 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.
All 20 tracked products in this niche — three views at once, no toggling.
Top sellers
by 90-day click share
DEWALT Angle Grinder 7 in. 13 Amp 8 000 RPM High Power-to-Weight Heavy Duty Electric Grinder Tool Corded (DW840)
DEWALT$157.334.7★1,001 rev
VEVOR Angle Grinder 7 Electric Grinder Power Tool 13Amps 8500RPM High-Speed Corded Angle Grinders with 270 Adjustable Dust Guard for Metal Grinding Cutting Rust Removal (Disc Not Included)
VEVOR$64.084.2★44 rev
PROMAKER 7 inch Angle Grinder 17.2 AMP 8400 RPM Industrial Electric Angle Grinder with 2 Extra Carbon Brushes Built for Heavy-Duty Tasks and Professional Performance 2 Years Warranty.
ProMaker$83.634.2★63 rev
DEWALT Angle Grinder Tool Kit with Bag and Cutting Wheels 7-Inch 13-Amp (DW840K) full size
DEWALT$148.944.7★492 rev
Makita GA7021 7 Angle Grinder with AC/DC Switch
Makita$181.204.8★664 rev
Newest
by launch date
7 Inch Concrete Grinder with Extendable Rod 3800W Grinding Machine
XIIW$202.556 rev
FECTOSAW 7-Inch Concrete Grinder 1580W (2.1 HP) Constant Power Motor Variable Speed Electric Floor Polisher with Dust Shroud & Diamond Grinding Wheel for Concrete Wall & Surface Grinding
FectoSaw$176.6314 rev
VEVOR Angle Grinder 7 Electric Grinder Power Tool 13Amps 8500RPM High-Speed Corded Angle Grinders with 270 Adjustable Dust Guard for Metal Grinding Cutting Rust Removal (Disc Not Included)
VEVOR$64.0844 rev
WEN 15-Amp 7-Inch Angle Grinder with Reversible Handle (94487) Black
WEN$74.2128 rev
Hoteche 9-Inch Angle Grinder 3.3-HP Heavy-Duty Electric Grinder Fits 7/8 Hole Size Wheels for Metal Cutting Concrete Grinding and Polishing
Hoteche$88.9819 rev
Trending
90-day click momentumFECTOSAW 7-Inch Concrete Grinder 1580W (2.1 HP) Constant Power Motor Variable Speed Electric Floor Polisher with Dust Shroud & Diamond Grinding Wheel for Concrete Wall & Surface Grinding
FectoSaw$176.634.2★
7 Inch Concrete Grinder with Extendable Rod 3800W Grinding Machine
XIIW$202.552.5★
VEVOR Angle Grinder 7 Electric Grinder Power Tool 13Amps 8500RPM High-Speed Corded Angle Grinders with 270 Adjustable Dust Guard for Metal Grinding Cutting Rust Removal (Disc Not Included)
VEVOR$64.084.2★
Hoteche 9-Inch Angle Grinder 3.3-HP Heavy-Duty Electric Grinder Fits 7/8 Hole Size Wheels for Metal Cutting Concrete Grinding and Polishing
Hoteche$88.984.4★
DEWALT Angle Grinder Tool Kit with Bag and Cutting Wheels 7-Inch 13-Amp (DW840K) full size
DEWALT$148.944.7★
What buyers say about 7 inch grinder
What buyers praise and complain about, mined from review topics.What buyers love
“excellent grinder”
“It doesnt bog down and feels solid and well-built”
“Worth the money”
“its effective, straightforward, and does what you expect it to do without issues”
“Durable”
“Does the job”
“It devinetly is heavy, hiwever the swivel neck and the three handle attachment holes make changing positions easy and manageable”
“Nice and solid”
What buyers complain about
“Did not last a year”
“very cheaply made”
“Big”
“On the heavy side”
“Fire hazard”
“Wasnt working it all”
“takes paint rust off metal fast”
“IT was a rebuild”
“Do not buy this grinder if you intend on using a type one flat cutting wheel”
“No instructions for assembly”
Top return reasons
Common questions
- Is 7 inch grinder profitable to sell on Amazon United States?
- The niche generates $254K/yr across 20 tracked products. 2 of 3 products launched in the last 360 days are still selling. 90-day search growth is -1.2%. Flapen's verdict: Skip it (44/100).
- How competitive is the 7 inch grinder niche?
- 13 brands and 71 sellers compete. The top 5 products take 63% of clicks and top 5 brands hold 83% of demand.
- What do buyers complain about in 7 inch grinder?
- Top complaints mined from reviews: Durability, Quality-Overall, Size-Overall. The return rate is 3.1%.
- When does demand for 7 inch grinder peak?
- Demand is steady year-round — the busiest month runs 1.4× the quietest.
- What does it cost to enter the 7 inch grinder niche?
- Listings span $64.08–$323.92; the average listing price is $159.07 (sweet spot $15–$100). The average incumbent carries 192 reviews — the moat a new listing must climb.