21mm Impact Socket
FailPrices span $4.32–$16.07, mostly outside the sweet spot, so 21mm Impact Socket is a Fail.
- Flapen Score
- 43 / 100Ranks 1,615 of 2,225 DIY & Tools niches · −6 vs the category median of 4943
- Market size
- £56K/yr48K searches / yr
- 90-day growth
- -17.6%search demand this quarter
- Competition
- 64%top-5 click share · 13 brands · 50 sellers
Flapen Score
21mm Impact Socket against its category
The dotted line is the DIY & Tools average. Past it, 21mm Impact Socket is stronger. Inside it, weaker.
Market
The 21mm Impact Socket market on Amazon at a glance
Shoppers on Amazon United Kingdom searched for 21mm Impact Socket 48K times last year and spent an estimated £56K. The top 5 brands take 81% of clicks. Demand peaks in Feb. Flapen scores it 43 out of 100, a Fail.
01 · Demand
An estimated 16.5% of those searches ended in a purchase.
Shoppers searched for this 48K times in the last 12 months. That counts every search on Amazon United Kingdom for this niche's terms. An estimated 16.5% of those searches ended in a purchase. Searches in the last 90 days moved -17.6% against the 90 days before. Searches, conversion and average price together put the market at an estimated £56K a year.
- Searches, last 12 months
- 48K
- Growth, 90 days vs prior 90
- -17.6%
- Conversion, latest week
- 16.5%
- Market size, estimated
- £56Ka year
- Peak month
- February2.2× the quietest month
- Top search term
- 21mm impact socket19K searches a year
02 · Price
A sale here is worth £7.14.
Listings sell for £7.14 on average, from £4.32 to £16.07. Amazon reports units sold in ranges. This niche sold 6K to 8K a year. The average listing sells 250 to 500 of them. At £7.14 that is £2K to £4K a year per listing.
- Average price
- £7.14under the $15 to $100 sweet spot
- Price range
- £4.32–£16.07
- Amazon United Kingdom median price
- £12.12across 27,606 niches
- Units sold a year
- 6K–8K
- Units per listing a year
- 250–500
- Revenue per listing a year
- £2K–£4K
- Returns
- 0.3%of orders · Amazon United Kingdom median 0.6%
03 · Entry bar
The bar here is low.
55% of listings pay for placement with sponsored ads. 82% ship with Prime. On an average day, 3.7% of listings are out of stock. The average listing ranks #388 within Building Supplies. It carries 446 reviews at 4.49 stars, so a new listing needs social proof before a better product.
- Sponsored listings
- 55%
- Prime listings
- 82%
- Out of stock, average day
- 3.7%
- Average rank
- #388in Building Supplies
- Average rating
- 4.49 starsAmazon United Kingdom average 4.36 stars
- Average reviews
- 446per listing
- Listings tracked
- 22
04 · Newcomers
1 of last year's 6 launches cleared the first-year sales bar.
6 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 53 months on average, so the names here are settling in.
- Launched, last 12 months
- 6
- Successful launches
- 1Amazon's first-year sales bar
- Average brand age
- 53 months
Products
Top 21mm Impact Socket 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 22, 2026. The live listing can differ.
Top sellers
by estimated 90-day click share
Makita 134833-2 Impact Socket
- Price
- £6.75
- Rating
- 4.6/5
- Reviews
- 1,989
- Age
- 12y ago

US PRO Single 1/2 DR 21MM 6PT Deep Impact Socket 1367
- Price
- £4.75
- Rating
- 4.8/5
- Reviews
- 82
- Age
- 8y ago

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
- Price
- £10.11
- Rating
- 4.4/5
- Reviews
- 25
- Age
- 11mo ago

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
- Price
- £9.68
- Rating
- 4.6/5
- Reviews
- 21
- Age
- 1y ago

Kielder KWT-125-PO 1/2 Mid-Size 21mm Scaffolding Impact Socket (52mm Long) with Pin & O-Ring
- Price
- £5.49
- Rating
- 4.2/5
- Reviews
- 165
- Age
- 6y ago
Trending
estimated 90-day click momentum
Tightspot 1/2 Inch Drive 21 mm Deep Impact Socket with Anti Rounding 6 Point Design Heat Treated CRV Steel
- Price
- £7.23
- Rating
- 4.8/5
- Reviews
- 511
- Age
- 1y ago

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
- Price
- £5.34
- Rating
- 4.8/5
- Reviews
- 12
- Age
- 7mo ago

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
- Price
- £5.26
- Rating
- 4.3/5
- Reviews
- 26
- Age
- 8mo ago

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
- Price
- £10.11
- Rating
- 4.4/5
- Reviews
- 25
- Age
- 11mo ago

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
- Price
- £9.32
- Rating
- 4.3/5
- Reviews
- 9
- Age
- 8mo ago
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
- Price
- £5.34
- Rating
- 4.8/5
- Reviews
- 12
- Age
- 7mo ago

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
- Price
- £9.32
- Rating
- 4.3/5
- Reviews
- 9
- Age
- 8mo ago

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
- Price
- £5.26
- Rating
- 4.3/5
- Reviews
- 26
- Age
- 8mo ago

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
- Price
- £5.14
- Rating
- 4.6/5
- Reviews
- 15
- Age
- 8mo ago

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
- Price
- £7.34
- Rating
- 4.7/5
- Reviews
- 26
- Age
- 11mo ago
Competition
Competition: brands, sellers & click share
The top 5 products take an estimated 64% of clicks. Leaders hold, but buyers still shop past them.
Brands
13 falling
Sellers
50
Est. top-5 brand share
81%
Top 20: 100%
Est. 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
21mm Impact Socket search demand
Weekly searches over the year, seasonality beneath. Pick a range.
Peak months: Feb · busiest ÷ quietest = 2.2×
Search terms
Top 21mm Impact Socket search terms shoppers use
The exact words shoppers type, with estimated yearly volume, growth, and conversion.
- 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
Reviews and returns
What reviews say buyers love and hate about 21mm Impact Socket
We read the reviews and the return reasons for every product selling here.
“Shocking false advertising”
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.
16 topics
Keep looking
Related niches
Niches in the same category that score near this one. Research these next.
Best Flapen score
The highest-scoring niches we track right now, across every category.
FAQ
Common 21mm Impact Socket 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








