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21mm ソケット

Maybe

An estimated 0.7% of orders come back. But products sell for $1065.81 on average, outside the sweet spot, so 21mm ソケット is a Maybe.

Flapen Score
57
57 / 100
Ranks 2,057 of 4,191 DIY・工具・ガーデン niches · on the category median
Market size
¥2.0M/yr29K searches / yr
90-day growth
-44.1%search demand this quarter
Competition
44%top-5 click share · 16 brands · 87 sellers

Flapen Score

21mm ソケット against its category

The dotted line is the DIY・工具・ガーデン average. Past it, 21mm ソケット is stronger. Inside it, weaker.

57Maybe
Big MarketTrendingHigh ConversionOpen MarketLow ReturnsPrice rangeAvg priceNo Dominant BrandLow Review BarrierQuality Gap
This niche Category average

Market

The 21mm ソケット market on Amazon at a glance

Shoppers on Amazon Japan searched for 21mm ソケット 29K times last year and spent an estimated ¥2.0M. The top 5 brands take 75% of clicks. Demand peaks in Apr–Nov–Dec. Flapen scores it 57 out of 100, a Maybe.

01 · Demand

An estimated 6.6% of those searches ended in a purchase.

Shoppers searched for this 29K times in the last 12 months. That counts every search on Amazon Japan for this niche's terms. An estimated 6.6% of those searches ended in a purchase. Searches in the last 90 days moved -44.1% against the 90 days before. Searches, conversion and average price together put the market at an estimated ¥2.0M a year.

Searches, last 12 months
29K
Growth, 90 days vs prior 90
-44.1%
Conversion, latest week
6.6%
Market size, estimated
¥2.0Ma year
Peak month
December4.7× the quietest month
Top search term
21mm ソケット11K searches a year

02 · Price

A sale here is worth ¥1065.81.

Listings sell for ¥1065.81 on average, from ¥407.86 to ¥3128.11. Amazon reports units sold in ranges. This niche sold 2K to 2K a year. The average listing sells 0 to 100 of them. At ¥1065.81 that is ¥0 to ¥107K a year per listing.

Average price
¥1065.81above the $15 to $100 sweet spot
Price range
¥407.86–¥3128.11
Amazon Japan median price
¥1942.07across 14,733 niches
Units sold a year
2K–2K
Units per listing a year
0–100
Revenue per listing a year
¥0–¥107K
Returns
0.7%of orders · Amazon Japan median 0.4%

03 · Entry bar

The bar here is low.

48% of listings pay for placement with sponsored ads. 97% ship with Prime. On an average day, 0.0% of listings are out of stock. The average listing ranks #33 within 作業工具. It carries 515 reviews at 4.35 stars, so a new listing needs social proof before a better product.

Sponsored listings
48%
Prime listings
97%
Out of stock, average day
0.0%
Average rank
#33in 作業工具
Average rating
4.35 starsAmazon Japan average 4.15 stars
Average reviews
515per listing
Listings tracked
29

04 · Newcomers

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

1 products launched here in the last 12 months. 1 of them cleared the first-year sales bar, our mark for a successful launch. The brands on the shelf have sold for 91 months on average, so the names here are established.

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

Products

Top 21mm ソケット 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 44% of clicks. Leaders hold, but buyers still shop past them.

Brands

16 falling

Sellers

87

Top-5 brand share

75%

Top 20: 100%

Top-5 click share

44%

Top 20: 92%

Open market

25%

  • Brand 132%
  • Brand 212%
  • Brand 38%
  • Brand 48%
  • Brand 57%
  • Brand 67%

Demand

21mm ソケット search demand

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

1K750Spike '24Holiday '24Spike '25Prime Day '25Holiday '25Spike '26SepDecMarJunAugNovMarMay

Peak months: Apr, Nov, Dec · busiest ÷ quietest = 4.7×

Search terms

Top 21mm ソケット search terms shoppers use

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

  • 21mm ソケット11K/yr
  • インパクト ソケット 21mm6K/yr
  • 21ソケット3K/yr
  • ソケット 21mm4K/yr
  • 21mm ソケット インパクト4K/yr

Reviews and returns

What reviews say buyers love and hate about 21mm ソケット

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

30%of positive reviews mention “使用の容易さ”
20%of negative reviews mention “耐久性”
0.7%of orders come back
“壊れた。”
A buyer, on “耐久性”20% 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.

22 topics

NegativePositive

FAQ

Common 21mm ソケット questions

Answered from the same tracked data.