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スパナ 13mm

スパナ 13mm shows low returns (0.5%), but a failed launch gate (market size, growth, or returns) keeps it on the watch list.

Flapen Score

58
Worth a look

Top 45% of 4,191 DIY・工具・ガーデン niches · +1 vs the category median of 57

Market size 86Growth 14Conversion 97Competition 56Returns 98Price range 0Avg price 0Brand share 40Review moat 74Quality gap 77
This niche Category average · 4,191 niches

Is スパナ 13mm profitable on Amazon?

According to Flapen's Amazon Japan niche tracking, スパナ 13mm is a ¥1.5M/yr Amazon Japan market (14K searches/yr). The top 5 brands hold 81% of demand. Verdict: Worth a look — 58/100.

スパナ 13mm: the Amazon niche in one read

Everything a seller checks before entering, in three answers.

Is the demand real?

Worth a look. Search demand moved -21.8% over the last 90 days and 15.9% of searches end in a purchase.

¥1.5M

revenue / yr

Units sold / yr1K
Search volume / yr-21.8%14K
Conversion rate15.9%
Avg price¥651.88

Who owns the niche?

The top 5 brands hold 81% of demand, so 19% of the market is open.

19%

open market share

Brands · sellers13 · 78
Top-5 product click share52%
Open market19%
Avg brand age68 months

Is there a way in?

Listing quality. The average product page scores 0/100 on content standards. Incumbents average 4.3★ — the gap to enter on.

0/100

page quality · 27 products

Sponsored placement63%
New entrants (1y)0· 0 succeeded
Avg rating4.3★
Avg reviews533

Top スパナ 13mm products & what they sell for

Every tracked product — its share of the shelf, its review moat, and what it sells for.

Competition: brands, sellers & click share

The top 5 products take 52% of clicks — established leaders, but buyers still shop beyond them.

¥0¥147K¥294K¥441K¥588K1101001K10K Review Count Sales
Beatable (≤4.3★) Contested Strong incumbent (>4.7★)

Brands

13 falling

Sellers

78

Top-5 brand share

81%

Top 20: 100%

Top-5 click share

52%

Top 20: 92%

Open market

14%

  • トネ(TONE)43%
  • SK11(エスケー11)18%
  • Amazonベーシック(Amazon Basics)7%
  • DFsucces7%
  • trad(トラッド)7%
  • デイトナ(Daytona)5%
  • Open — no brand owns it (7 brands, 14%)

スパナ 13mm demand & seasonality

Weekly search volume, with the niche's key stats alongside.

Volume14KCVR15.9%Products27Brands13Top 5 Brands81%OOS Rate0.9%Rating4.3★Reviews533Avg BSR#33
400300Spike '25Prime Day '25Spike '26AprMayJunJulAugSepOctNovDecJanFebMarAprMayJunJul

No pronounced peak months · busiest ÷ quietest = 1.4×

Top スパナ 13mm search terms shoppers use

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

  • 13mm スパナ4K/yr
  • スパナ 13mm6K/yr
  • 13mm レンチ4K/yr

What reviews say buyers love and hate about スパナ 13mm

What buyers mention most, as a share of all reviews.

What buyers love

84% of reviews
使用の容易さ26%

シンプル・イズ・ベスト

総合品質19%

品質はそこそこ、これで充分です。

コストパフォーマンス15%

コスパ良し

サイズ全体10%

よく使うサイズと、自転車ペダル用のサイズが揃ってホルダーまで付いてるので大満足です。

ロック機構3%

こちらはラチェット機能も付いており、ほかのレンチの受けとしてもラチェットとしても使える。

What buyers complain about

72% of reviews
サイズ全体22%

11×13なんてなかなか使わないサイズですが

互換性-全体6%
機能全体6%

バルトの頭に首振り部分をはめて、締込みや外しをするとボルトの頭に引っ掛かってスパナは抜けません。

接着性/粘着性6%

シールを剥がすときに粘着剤が残ったのが唯一気になった点ですが

総合品質6%

安いが、セット内容がめちゃくちゃで必要なサイズが無かった。

スパナ 13mm return rate & reasons

Why buyers send it back, as a share of all return requests.

0.5%

Return rate

0%

Fixable by listing

The "fixable" share counts expectation-mismatch reasons — size, look, advertised-vs-actual — that better copy and images address.

1サイズ全体
67%
2不良材料/部品
10%
3総合品質
10%
4使用の容易さ
5%
5機能全体
5%

Common スパナ 13mm questions

The questions sellers ask about this niche, answered from the tracked metrics.

Flapen scores スパナ 13mm 58/100 on Amazon Japan — Worth a look. The niche generates ¥1.5M/yr across 27 tracked products. Search demand moved -21.8% over the last 90 days.
Search demand for スパナ 13mm on Amazon Japan is steady year-round — the busiest month runs 1.4× the quietest.