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21mm Socket

Fail

Prices span $4.88–$14.44, mostly outside the sweet spot, so 21mm Socket is a Fail.

Flapen Score
45
45 / 100
Ranks 4,788 of 7,287 Automotive niches · −4 vs the category median of 49
Market size
$139K/yr123K searches / yr
90-day growth
+15.4%search demand this quarter
Competition
61%top-5 click share · 12 brands · 18 sellers

Flapen Score

21mm Socket against its category

The dotted line is the Automotive average. Past it, 21mm Socket is stronger. Inside it, weaker.

45Fail
Big MarketTrendingHigh ConversionOpen MarketLow ReturnsPrice rangeAvg priceNo Dominant BrandLow Review BarrierQuality Gap
This niche Category average

Market

The 21mm Socket market on Amazon at a glance

Shoppers on Amazon United States searched for 21mm Socket 123K times last year and spent an estimated $139K. The top 5 brands take 77% of clicks. Flapen scores it 45 out of 100, a Fail.

01 · Demand

An estimated 13.0% of those searches ended in a purchase.

Shoppers searched for this 123K times in the last 12 months. That counts every search on Amazon United States for this niche's terms. An estimated 13.0% of those searches ended in a purchase. Searches in the last 90 days moved +15.4% against the 90 days before. Searches, conversion and average price together put the market at an estimated $139K a year.

Searches, last 12 months
123K
Growth, 90 days vs prior 90
+15.4%
Conversion, latest week
13.0%
Market size, estimated
$139Ka year
Peak month
May1.3× the quietest month
Top search term
21mm socket45K searches a year

02 · Price

A sale here is worth $8.75.

Listings sell for $8.75 on average, from $4.88 to $14.44. Amazon reports units sold in ranges. This niche sold 15K to 20K a year. The average listing sells 500 to 750 of them. At $8.75 that is $4K to $7K a year per listing.

Average price
$8.75under the $15 to $100 sweet spot
Price range
$4.88–$14.44
Amazon United States median price
$24.38across 115,062 niches
Units sold a year
15K–20K
Units per listing a year
500–750
Revenue per listing a year
$4K–$7K
Returns
1.8%of orders · Amazon United States median 2.1%

03 · Entry bar

The bar here is reviews.

68% of listings pay for placement with sponsored ads. 100% ship with Prime. On an average day, 4.8% of listings are out of stock. The average listing ranks #64 within Steering & Suspension Tools. It carries 2,121 reviews at 4.75 stars, so a new listing needs social proof before a better product.

Sponsored listings
68%
Prime listings
100%
Out of stock, average day
4.8%
Average rank
#64in Steering & Suspension Tools
Average rating
4.75 starsAmazon United States average 4.42 stars
Average reviews
2,121per listing
Listings tracked
19

04 · Newcomers

0 of last year's 1 launches cleared the first-year sales bar.

1 products launched here in the last 12 months. 0 of them cleared the first-year sales bar, our mark for a successful launch. The brands on the shelf have sold for 53 months on average, so the names here are settling in.

Launched, last 12 months
1
Successful launches
0Amazon's first-year sales bar
Average brand age
53 months

Products

Top 21mm Socket products & what they sell for

Every tracked product: its share of the shelf, its reviews, and its price.

Sign in to see the products

The products selling in this niche are for signed-in readers. Every market figure above stays open to everyone.

Competition

Competition: brands, sellers & click share

The top 5 products take 61% of clicks. Leaders hold, but buyers still shop past them.

Brands

12 falling

Sellers

18

Top-5 brand share

77%

Top 20: 100%

Top-5 click share

61%

Top 20: 100%

Open market

18%

  • Brand 141%
  • Brand 212%
  • Brand 312%
  • Brand 46%
  • Brand 56%
  • Brand 65%
  • Open — no brand owns it (6 brands, 18%)

Demand

21mm Socket search demand

Weekly searches over the year, seasonality beneath. Pick a range.

3K2KPrime Day '25SepDecMarJunAugNovMarMay

No pronounced peak months · busiest ÷ quietest = 1.3×

Search terms

Top 21mm Socket search terms shoppers use

The exact words shoppers type, with yearly volume, growth, and conversion.

  • 21mm socket45K/yr
  • 21mm impact socket 1/2 drive16K/yr
  • 21 mm socket 1/2 drive17K/yr
  • 21mm socket 1/2 drive8K/yr
  • 21 mm socket8K/yr
  • 21 mm impact socket 1/2 drive4K/yr
  • 21mm deep socket4K/yr
  • 21mm impact socket9K/yr
  • 21mm deep socket 1/2 drive5K/yr
  • 21mm3K/yr

Reviews and returns

What reviews say buyers love and hate about 21mm Socket

We read the reviews and the return reasons for every product selling here.

25%of positive reviews mention “Quality-Overall”
50%of negative reviews mention “Durability”
1.8%of orders come back
“Broke after a couple uses”
A buyer, on “Durability”50% of negative reviews mention the same topic

Every topic

Every topic buyers talk about, one row each.

Red shows the share of negative reviews and green the share of positive reviews, biggest topic first. Open a row to read what they wrote.

15 topics

NegativePositive

FAQ

Common 21mm Socket questions

Answered from the same tracked data.