18mm wrench
Worth a lookShows searches that convert (15.2% search→purchase), but strong incumbent ratings (4.7★) keeps it on the watch list.
Conversion
Incredible15.2%search→purchase rate — share of searches ending in a sale
Returns
Great1.4%return rate — above 5% kills the launch gate
Brand share
Great57%top-5 brand share — no brand owns this niche
Competition
Good49%top-5 click share — leaders hold, buyers still browse
Review moat
Okay1,745.96avg incumbent reviews — the moat a new listing must climb
Growth
Okay+14.7%90-day search growth — must beat 0% to launch
Price range
Okay$5.52–$20.43cheapest to priciest tracked listing — scored on the share inside $15–$100
Avg price
Okay$9.65avg listing price — sweet spot $15–$100
Market size
Okay$113K$113K/yr · 77K searches
Quality gap
Bad4.7★avg incumbent rating — lower means beatable quality
According to Flapen's Amazon United States niche tracking, 18mm wrench is a $113K/yr Amazon United States market (77K searches/yr). The top 5 brands hold 57% of demand. Verdict: Worth a look — 54/100.
Data updated Jul 29, 2026 · scored weekly · How we score niches
18mm wrench market data
- Units sold / yr
- 10K–13K
- avg 250–500/product
- Revenue / yr
- $97K–$121K
- units × avg price
- Conversion rate
- 15.2%
- Avg BSR
- #85
- Page quality
- 0%
- Prime
- 100%
- Sponsored
- 70%
- Out of stock
- 6.5%
- Avg brand age
- 57 months
- Avg seller age
- 181 days
Competition & brand share
The top 5 products take 49% of clicks — established leaders, but buyers still shop beyond them.Brands
19 falling
Sellers
39
Top-5 brand share
57%
Top 20: 100%
Top-5 click share
49%
Top 20: 97%
Open market
37%
- Egofine15%
- DURATECH14%
- FLZOSPER13%
- TEKTON8%
- HARSKIYER8%
- Pilida6%
Demand & seasonality
Weekly Amazon search volume, last 102 weeks — +14.7% search growth over the last 90 days.No pronounced peak months · busiest ÷ quietest = 1.5×
Top 18mm wrench search terms
- 18mm wrench40K/yr
- 18 mm wrench19K/yr
- 18mm ratcheting wrench10K/yr
- 18mm ratchet wrench5K/yr
- 18 mm ratchet wrench3K/yr
Top 18mm wrench 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 23 tracked products in this niche — three views at once, no toggling.
Top sellers
by 90-day click share
Egofine 18mm Ratcheting Combination Wrench Metric Industrial Grade Gear Spanner with 12-Point Design 72-Tooth Ratchet Chrome Vanadium Steel
Egofine$8.874.2★117 rev
FLZOSPER 18mm Metric Wrench 12-Point Box End Head Combination Wrench Spanner
FLZOSPER$6.804.8★620 rev
TEKTON 18 mm Combination Wrench | 18288
TEKTON$8.984.8★5,844 rev
HARSKIYER 18mm Ratcheting Wrench 2 Pcs 72-Tooth 12-Point Chrome Plated
HARSKIYER$10.914.6★121 rev
Pilida 18mm Ratcheting Combination Wrench 12 Point Metric Flex Head Gear Wrench Rachet Box End Spanner 72 Teeth Chrome Vanadium Steel
Pilida$11.684.7★1,117 rev
Newest
by launch date
BLACK CANYON Metric 18mm Combination Wrench 12-Point Box End & Hex Opening Design Polished Steel
BLACK CANYON$5.5221 rev
pgroup 18mm Metric Combination Wrench CR-V Steel with Mirror Polish 12-Point Design 15-Degree Offset Perfect for Auto Repair Household Car & Truck Emergency
pgroup$6.62127 rev
COYAGRIP 18mm Wrench Industrial Grade Spanner Combination Wrenches Metric with 12-Point Box End 15-Degree Offset 18mm Wrenches Chrome Vanadium Steel Mirror Polished
COYAGRIP$8.66260 rev
Jaeger 18 mm Combo Ratchet Wrench 90-Tooth Chrome Vanadium Metric
Jaeger$8.796,018 rev
Bonsicoky 18mm Metric Ratchet Wrench
Bonsicoky$7.0561 rev
Trending
90-day click momentumBLACK CANYON Metric 18mm Combination Wrench 12-Point Box End & Hex Opening Design Polished Steel
BLACK CANYON$5.524.6★
Jetech 18mm Ratchet Wrench Ratcheting Combination Wrench Metric Industrial Grade Gear Spanner with 12-Point Design 72-Tooth Ratchet Chrome Vanadium Steel for Auto & DIY Repair
Jetech$7.234.7★
Jiozermi 18mm Ratcheting Combination Wrench 72 Teeth Metric
Jiozermi$6.494.7★
SORAKO 18mm Ratcheting Combination Wrench Chrome Vanadium Steel Gear Wrench Industrial Grade Cr-V Steel Gear Spanner Household Garage Tools(Metric)
SORAKO$6.884.5★
TEKTON 18 mm Combination Wrench | 18288
TEKTON$8.984.8★
What buyers say about 18mm wrench
What buyers praise and complain about, mined from review topics.What buyers love
“Appears well made”
“Cheap price”
“Perfect fit”
“As expected”
“But actually seem decently made and sturdy”
“Hasnt broke yet”
“Good quality and material, I have used and no problems”
“Heavy duty”
“Made in Taiwan +++”
“Very useful”
What buyers complain about
“Broke right away”
“the straight/box was just a tad loose”
“it occasionally strips when applying pressure”
“It could be improved”
“It's cheap for a reason”
Top return reasons
Common questions
- Is 18mm wrench profitable to sell on Amazon United States?
- The niche generates $113K/yr across 23 tracked products. 0 of 1 products launched in the last 360 days are still selling. 90-day search growth is +14.7%. Flapen's verdict: Worth a look (54/100).
- How competitive is the 18mm wrench niche?
- 19 brands and 39 sellers compete. The top 5 products take 49% of clicks and top 5 brands hold 57% of demand.
- What do buyers complain about in 18mm wrench?
- Top complaints mined from reviews: Durability, Size-Overall, Functionality-Overall. The return rate is 1.4%.
- When does demand for 18mm wrench peak?
- Demand is steady year-round — the busiest month runs 1.5× the quietest.
- What does it cost to enter the 18mm wrench niche?
- Listings span $5.52–$20.43; the average listing price is $9.65 (sweet spot $15–$100). The average incumbent carries 1,746 reviews — the moat a new listing must climb.