21mm impact socket
Skip itPrices mostly outside the sweet spot ($4.32–$16.07) — this niche doesn't clear our bar today.
Returns
Incredible0.3%return rate — above 5% kills the launch gate
Conversion
Incredible16.5%search→purchase rate — share of searches ending in a sale
Review moat
Great445.91avg incumbent reviews — the moat a new listing must climb
Quality gap
Okay4.5★avg incumbent rating — lower means beatable quality
Brand share
Okay81%top-5 brand share — brands hold most of the demand
Competition
Okay64%top-5 click share — leaders hold, buyers still browse
Avg price
Bad£7.14avg listing price — sweet spot $15–$100
Growth
Bad-17.6%90-day search growth — must beat 0% to launch
Market size
Bad£56K£56K/yr · 48K searches
Price range
Bad£4.32–£16.07cheapest to priciest tracked listing — scored on the share inside $15–$100
According to Flapen's Amazon United Kingdom niche tracking, 21mm impact socket is a £56K/yr Amazon United Kingdom market (48K searches/yr). The top 5 brands hold 81% of demand. Demand peaks in Feb. Verdict: Skip it — 43/100.
Data updated Jul 22, 2026 · scored weekly · How we score niches
21mm impact socket market data
- Units sold / yr
- 6K–8K
- avg 250–500/product
- Revenue / yr
- £43K–£57K
- units × avg price
- Conversion rate
- 16.5%
- Avg BSR
- #388
- Page quality
- 0%
- Prime
- 82%
- Sponsored
- 55%
- Out of stock
- 3.7%
- Avg brand age
- 53 months
- Avg seller age
- 197 days
Competition & brand share
The top 5 products take 64% of clicks — established leaders, but buyers still shop beyond them.Brands
13 falling
Sellers
50
Top-5 brand share
81%
Top 20: 100%
Top-5 click share
64%
Top 20: 98%
Open market
13%
- Makita26%
- US PRO20%
- Mr.wintek17%
- Draper10%
- Kielder8%
- Youzzei6%
- Open — no brand owns it (7 brands, 13%)
Demand & seasonality
Weekly Amazon search volume, last 75 weeks — -17.6% search growth over the last 90 days.Peak months: Feb · busiest ÷ quietest = 2.2×
Top 21mm impact socket search terms
- 21mm impact socket19K/yr
- 21mm socket11K/yr
- makita 21mm impact socket scaffolding3K/yr
- makita socket 21mm3K/yr
- makita 21mm impact socket5K/yr
- 21mm socket 1/2 drive3K/yr
- 21 mm impact socket3K/yr
Top 21mm impact socket 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 22 tracked products in this niche — three views at once, no toggling.
Top sellers
by 90-day click share
Makita 134833-2 Impact Socket
Makita£6.754.6★1,989 rev
US PRO Single 1/2 DR 21MM 6PT Deep Impact Socket 1367
US PRO£4.754.8★82 rev
Mr.wintek 21mm Scaffolding Impact Socket 1/2 Drive with Retaining Pin & O-Ring 12 Point Design CR-MO Steel for Scaffolding Coupler Pipe Clamps High-Torque Applications Automotive Repair
Mr.wintek£10.114.4★25 rev
Mr.wintek 21mm Scaffolding Impact Socket 1/2 Drive with Retaining Pin & O-Ring 6 Point Design and 52mm Length Socket Cr-Mo Steel for Scaffolding Coupler and Pipe Clamps
Mr.wintek£9.684.6★21 rev
Kielder KWT-125-PO 1/2 Mid-Size 21mm Scaffolding Impact Socket (52mm Long) with Pin & O-Ring
Kielder£5.494.2★165 rev
Newest
by launch date
Youzzei 1/2 Inch 21mm Impact Socket 6 Point Shallow Metric Socket Upgraded Electrophoretic Coating CR-V Steel 21mm Sockets 1/2 Drive for Car Repair Mechanical Maintenance Home Use
Youzzei£5.3412 rev
2-Pack 21mm Scaffolding Impact Socket Set 1/2 Drive 53mm Deep Metric Impact Socket Heavy Duty CR-MO Steel Deep Metric Socket with Retaining Pin & O-Ring Perfect for Scaffold Clamps Long Bolts
Tharvolex£9.329 rev
Youzzei 21mm 1/2 Inch Square Drive Socket 6 Point Metric Socket Polishing Chrom Vanadium Alloy Steel 21mm Sockets 1/2 Drive for Car Repair Mechanical Maintenance Home Use
Youzzei£5.2626 rev
Youzzei 21mm 1/2 Inch Square Drive Socket 12 Point Metric Socket Polishing Chrom Vanadium Alloy Steel 21mm Sockets 1/2 Drive for Car Repair Mechanical Maintenance Home Use
Youzzei£5.1415 rev
Othmro 21mm Scaffolding Impact Sockets 1/2 Square Drive 78mm Length Deep Scaffolders Drive CR-MO Chrome Vanadium Steel Drive with Retaining Pin + O-Ring for Long Bolts and Scaffolding Clamps
Othmro£7.3426 rev
Trending
90-day click momentum
Tightspot 1/2 Inch Drive 21 mm Deep Impact Socket with Anti Rounding 6 Point Design Heat Treated CRV Steel
TIGHTSPOT£7.234.8★
Youzzei 1/2 Inch 21mm Impact Socket 6 Point Shallow Metric Socket Upgraded Electrophoretic Coating CR-V Steel 21mm Sockets 1/2 Drive for Car Repair Mechanical Maintenance Home Use
Youzzei£5.344.8★
Youzzei 21mm 1/2 Inch Square Drive Socket 6 Point Metric Socket Polishing Chrom Vanadium Alloy Steel 21mm Sockets 1/2 Drive for Car Repair Mechanical Maintenance Home Use
Youzzei£5.264.3★
Mr.wintek 21mm Scaffolding Impact Socket 1/2 Drive with Retaining Pin & O-Ring 12 Point Design CR-MO Steel for Scaffolding Coupler Pipe Clamps High-Torque Applications Automotive Repair
Mr.wintek£10.114.4★
2-Pack 21mm Scaffolding Impact Socket Set 1/2 Drive 53mm Deep Metric Impact Socket Heavy Duty CR-MO Steel Deep Metric Socket with Retaining Pin & O-Ring Perfect for Scaffold Clamps Long Bolts
Tharvolex£9.324.3★
What buyers say about 21mm impact socket
What buyers praise and complain about, mined from review topics.What buyers love
“Good socket”
“Good Quality”
“Great value for money”
“Perfect, sturdy”
“Item as described”
“It fits well on a 1/2 drive and grips securely, making it practical for long bolts and scaffold work”
“Ultra slim”
“Efficiency”
“it has a twelve point design”
“Durable”
What buyers complain about
“Shocking false advertising”
“Ive tried to break it but without success”
“Too short”
“not the best ones I have used”
“no cleaned afterwards”
“Weighing 149 gms its heavy”
“not as deep as the listing suggests”
Top return reasons
Common questions
- Is 21mm impact socket profitable to sell on Amazon United Kingdom?
- The niche generates £56K/yr across 22 tracked products. 1 of 6 products launched in the last 360 days are still selling. 90-day search growth is -17.6%. Flapen's verdict: Skip it (43/100).
- How competitive is the 21mm impact socket niche?
- 13 brands and 50 sellers compete. The top 5 products take 64% of clicks and top 5 brands hold 81% of demand.
- What do buyers complain about in 21mm impact socket?
- Top complaints mined from reviews: Advertised Vs Actual Product, Durability, Size-Overall. The return rate is 0.3%.
- When does demand for 21mm impact socket peak?
- Demand peaks in Feb; the busiest month runs 2.2× the quietest.
- What does it cost to enter the 21mm impact socket niche?
- Listings span £4.32–£16.07; the average listing price is £7.14 (sweet spot $15–$100). The average incumbent carries 446 reviews — the moat a new listing must climb.