G1/2
MaybeAn estimated 0.7% of orders come back. But products sell for $663.15 on average, outside the sweet spot, so G1/2 is a Maybe.
- Flapen Score
- 59 / 100Top 39% of 4,191 DIY・工具・ガーデン niches · +2 vs the category median of 5759
- Market size
- ¥1.0M/yr25K searches / yr
- 90-day growth
- +15.3%search demand this quarter
- Competition
- 48%top-5 click share · 13 brands · 96 sellers
Flapen Score
G1/2 against its category
The dotted line is the DIY・工具・ガーデン average. Past it, G1/2 is stronger. Inside it, weaker.
Market
The G1/2 market on Amazon at a glance
Shoppers on Amazon Japan searched for G1/2 25K times last year and spent an estimated ¥1.0M. The top 5 brands take 91% of clicks. Demand peaks in Jul. Flapen scores it 59 out of 100, a Maybe.
01 · Demand
An estimated 6.2% of those searches ended in a purchase.
Shoppers searched for this 25K times in the last 12 months. That counts every search on Amazon Japan for this niche's terms. An estimated 6.2% of those searches ended in a purchase. Searches in the last 90 days moved +15.3% against the 90 days before. Searches, conversion and average price together put the market at an estimated ¥1.0M a year.
- Searches, last 12 months
- 25K
- Growth, 90 days vs prior 90
- +15.3%
- Conversion, latest week
- 6.2%
- Market size, estimated
- ¥1.0Ma year
- Peak month
- July1.8× the quietest month
- Top search term
- g1/210K searches a year
02 · Price
A sale here is worth ¥663.15.
Listings sell for ¥663.15 on average, from ¥280.22 to ¥1802.97. Amazon reports units sold in ranges. This niche sold 1K to 1K a year. The average listing sells 0 to 100 of them. At ¥663.15 that is ¥0 to ¥66K a year per listing.
- Average price
- ¥663.15above the $15 to $100 sweet spot
- Price range
- ¥280.22–¥1802.97
- Amazon Japan median price
- ¥1942.07across 14,733 niches
- Units sold a year
- 1K–1K
- Units per listing a year
- 0–100
- Revenue per listing a year
- ¥0–¥66K
- Returns
- 0.7%of orders · Amazon Japan median 0.4%
03 · Entry bar
The bar here is low.
32% of listings pay for placement with sponsored ads. 100% ship with Prime. On an average day, 2.8% of listings are out of stock. The average listing ranks #83 within 農具・散水用品. It carries 178 reviews at 4.16 stars, so a new listing needs social proof before a better product.
- Sponsored listings
- 32%
- Prime listings
- 100%
- Out of stock, average day
- 2.8%
- Average rank
- #83in 農具・散水用品
- Average rating
- 4.16 starsAmazon Japan average 4.15 stars
- Average reviews
- 178per listing
- Listings tracked
- 34
04 · Newcomers
4 of last year's 7 launches cleared the first-year sales bar.
7 products launched here in the last 12 months. 4 of them cleared the first-year sales bar, our mark for a successful launch. The brands on the shelf have sold for 46 months on average, so the names here are settling in.
- Launched, last 12 months
- 7
- Successful launches
- 4Amazon's first-year sales bar
- Average brand age
- 46 months
Products
Top G1/2 products & what they sell for
The products selling here, as shoppers see them on Amazon. Shelf share and sales are our estimates.
Prices and ratings read from Amazon on Jul 30, 2026. The live listing can differ.
Top sellers
by estimated 90-day click share
タカギ(Takagi) 蛇口ニップル ねじ付蛇口ニップル G065CG チャコールグレー G1/2 カップリング水栓 地下散水栓
- Price
- ¥370.49
- Rating
- 4.6/5
- Reviews
- 53
- Age
- 5mo ago

カクダイ メタルネジ口金 567-011
- Price
- ¥575.77
- Rating
- 4.2/5
- Reviews
- 1,540
- Age
- 15y ago

SANEI(サンエイ) 配管継手 平行ニップル 呼び13 ネジサイズ:G1/2 パッケージ入り PT206-13
- Price
- ¥317.19
- Rating
- 4.2/5
- Reviews
- 59
- Age
- 12y ago

タカギ ABS製 G1/2オスネジニップル GWA65GY
- Price
- ¥328.90
- Rating
- 4.3/5
- Reviews
- 432
- Age
- 7y ago

SANEI(サンエイ) 散水用品 金属製ネジニップル カップリング水栓・散水栓用 G1/2 PL60-21-13
- Price
- ¥627.12
- Rating
- 4.3/5
- Reviews
- 243
- Age
- 14y ago
Trending
estimated 90-day click momentum
DONGYE ネジ付蛇口ニップル G1/2・G3/4対応 蛇口ホースジョイント 水栓アダプター 洗濯機 農業 園芸 庭散水用コネクター接続 工具不要 簡単接続 (1点セット)
- Price
- ¥535.24
- Rating
- 4.2/5
- Reviews
- 3
- Age
- 4mo ago

タカギ(Takagi) 蛇口ニップル ねじ付蛇口ニップル G065CG チャコールグレー G1/2 カップリング水栓 地下散水栓
- Price
- ¥370.49
- Rating
- 4.6/5
- Reviews
- 53
- Age
- 5mo ago

タカギ(takagi) 地下散水栓ニップル G076CG チャコールグレー G1/2
- Price
- ¥445.99
- Rating
- 4.5/5
- Reviews
- 22
- Age
- 5mo ago

SANEI(サンエイ) 金属製オネジニップル 配管やバルブに散水ホースをつなぐ G1/2 ワンタッチで着脱 PL60-20-13
- Price
- ¥806.77
- Rating
- 5.0/5
- Reviews
- 1
- Age
- 9mo ago

カクダイ ナットつきホースニップル 613-36-1/2×16.0
- Price
- ¥631.60
- Rating
- 4.0/5
- Reviews
- 57
- Age
- 11y ago
Newest
by launch date
DONGYE ネジ付蛇口ニップル G1/2・G3/4対応 蛇口ホースジョイント 水栓アダプター 洗濯機 農業 園芸 庭散水用コネクター接続 工具不要 簡単接続 (1点セット)
- Price
- ¥535.24
- Rating
- 4.2/5
- Reviews
- 3
- Age
- 4mo ago

タカギ(Takagi) 蛇口ニップル ねじ付蛇口ニップル G065CG チャコールグレー G1/2 カップリング水栓 地下散水栓
- Price
- ¥370.49
- Rating
- 4.6/5
- Reviews
- 53
- Age
- 5mo ago

タカギ(takagi) 地下散水栓ニップル G076CG チャコールグレー G1/2
- Price
- ¥445.99
- Rating
- 4.5/5
- Reviews
- 22
- Age
- 5mo ago

SANEI(サンエイ) 金属製オネジニップル 配管やバルブに散水ホースをつなぐ G1/2 ワンタッチで着脱 PL60-20-13
- Price
- ¥806.77
- Rating
- 5.0/5
- Reviews
- 1
- Age
- 9mo ago

Mythtrail シャワーヘッド アダプター 4個セットシャワーホースアダプター 変換 g1/2 ホース パッキン付き 銀色 (適応 シャワーホース)
- Price
- ¥602.94
- Rating
- 3.5/5
- Reviews
- 54
- Age
- 11mo ago
Competition
Competition: brands, sellers & click share
The top 5 products take an estimated 48% of clicks. Leaders hold, but buyers still shop past them.
Brands
13 rising
Sellers
96
Est. top-5 brand share
91%
Top 20: 100%
Est. top-5 click share
48%
Top 20: 88%
Open market
7%
- タカギ(Takagi)35%
- SANEI(サンエイ)34%
- カクダイ(KAKUDAI)14%
- ISTORA6%
- Mythtrail3%
- PATIKIL2%
- Open — no brand owns it (7 brands, 7%)
Demand
G1/2 search demand
Weekly searches over the year, seasonality beneath. Pick a range.
Peak months: Jul · busiest ÷ quietest = 1.8×
Search terms
Top G1/2 search terms shoppers use
The exact words shoppers type, with estimated yearly volume, growth, and conversion.
- g1/210K/yr
- g1/2 ニップル5K/yr
- g1/2 ホース ジョイント4K/yr
- 蛇口 g1/23K/yr
- g1/2 継手3K/yr
Reviews and returns
What reviews say buyers love and hate about G1/2
We read the reviews and the return reasons for every product selling here.
“水漏れ”
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.
20 topics
Keep looking
Related niches
Niches in the same category that score near this one. Research these next.
FAQ
Common G1/2 questions
Answered from the same tracked data.
Figures on this page are estimates modeled from public Amazon pages and third-party keyword data. Amazon does not supply them, and no connected seller's data is used. How we handle Amazon data




