Is ez crank jack adapter tool profitable to sell on Amazon United States?

The niche generates $70K/yr across 16 tracked products. 5 of 14 products launched in the last 360 days are still selling. 90-day search growth is -41.6%. Flapen's verdict: Worth a look (52/100).

How competitive is the ez crank jack adapter tool niche?

14 brands and 17 sellers compete. The top 5 products take 71% of clicks and top 5 brands hold 75% of demand.

What do buyers complain about in ez crank jack adapter tool?

Top complaints mined from reviews: Durability, Quality-Overall, Size-Overall. The return rate is 1.0%.

What does it cost to enter the ez crank jack adapter tool niche?

Listings span $9.08–$26.14; the average listing price is $16.75 (sweet spot $15–$100). The average incumbent carries 89 reviews — the moat a new listing must climb.

ez crank jack adapter tool

Worth a look

Shows beatable incumbent ratings (3.5★), but soft demand (-41.6% this quarter) keeps it on the watch list.

Quality gap

Incredible3.5★

avg incumbent rating — lower means beatable quality

Review moat

Incredible88.63

avg incumbent reviews — the moat a new listing must climb

Returns

Great1.0%

return rate — above 5% kills the launch gate

Conversion

Great8.8%

search→purchase rate — share of searches ending in a sale

Avg price

Great$16.75

avg listing price — sweet spot $15–$100

Price range

Good$9.08–$26.14

cheapest to priciest tracked listing — scored on the share inside $15–$100

Brand share

Okay75%

top-5 brand share — brands hold most of the demand

Competition

Bad71%

top-5 click share — a locked-up shelf

Market size

Bad$70K

$70K/yr · 47K searches

Growth

Bad-41.6%

90-day search growth — must beat 0% to launch

Signals Low Review Barrier Quality Gap

According to Flapen's Amazon United States niche tracking, ez crank jack adapter tool is a $70K/yr Amazon United States market (47K searches/yr). The top 5 brands hold 75% of demand. Verdict: Worth a look — 52/100.

Data updated Jul 11, 2026 · scored weekly · How we score niches

ez crank jack adapter tool market data

Units sold / yr: 3K–4K; avg 0–100/product
Revenue / yr: $50K–$67K; units × avg price
Conversion rate: 8.8%
Avg BSR: #326
Page quality: 0%
Prime: 100%
Sponsored: 81%
Out of stock: 12.5%
Avg brand age: 15 months
Avg seller age: 265 days

Competition & brand share

The top 5 products capture 71% of clicks — a locked-up shelf that new listings rarely crack.

Brands

14 rising

Sellers

Top-5 brand share

75%

Top 20: 100%

Top-5 click share

71%

Top 20: 100%

Open market

19%

Generic25%
Moalaok14%
Shrandi14%
Koongloong13%
YGDMD10%
DGZMJJ5%

Demand

Weekly Amazon search volume, last 31 weeks — -41.6% search growth over the last 90 days.

Open Trend

Top ez crank jack adapter tool search terms

ez crank trailer jack for drill adapter7K/yr +66.7%7.0% conv.
ez crank12K/yr -46.6%10.2% conv.
ez-crank5K/yr -13.1%3.3% conv.
ez crank jack adapter tool16K/yr -88.2%7.2% conv.
ez crank trailer jack adapter5K/yr -73.2%8.5% conv.
easy crank trailer jack3K/yr -80.0%1.5% conv.

All search terms

Top ez crank jack adapter tool 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.

Beatable (≤4.3★) Contested Strong incumbent (>4.7★)

All 16 tracked products in this niche — three views at once, no toggling.

Top sellers

by 90-day click share

EZ Crank Trailer Jack Drill Adapter - Compatible with 1 Inch Jack Drive Shaft Stainless Steel Handle Cordless Drill Adapter with Socket Bit Attachment for Top Wind Trailer Crank

Generic$14.852.8★18 rev

Shrandi Trailer Jack Drill Adapter 1 Inch Drive Shaft Compatible Turbo ez Crank Jack Adapter Tool & 1/2 Inch Socket Bit Heavy Duty for RV Construction Dump Trailers (DIY Campers)

Shrandi$19.083.5★82 rev

2PCS EZ-Crank Trailer Jack Drill Adapter - Heavy Duty Power Drill Crank Handle for 1 Handle Studs 10X Faster Operation Tool for Timpte Dump Flatbed & Livestock Trailers (KIT (A+B))

Koongloong$16.372.5★5 rev

EZ Crank Jack Adapter Tool Heavy Duty EZ Crank Trailer Jack Drill Adapter for Trailers Jacks Quick Handling Professional Trailers Jacks Adapters for 1 Inch Handle Studs

YGDMD$9.743.4★7 rev

Moalaok Trailer Jack Drill Adapter Compatible with 1 Inch Jack Drive Shaft Stainless Steel Handle Cordless Drill Adapter with 1/2 Inch Socket Adapter Bit Attachment for Top Wind Trailer Jack Crank

Moalaok$20.173.8★184 rev

Newest

by launch date

WGSWX EZ-Crank Trailer Jack Drill Adapter - Heavy Duty Power Drill Crank Handle for 1 Handle Studs 10X Faster Operation Tool for Flatbed & Livestock Trailers

WGSWX$15.951 rev

3w ago

Trailer Jack Drill Adapter Compatible with 1 Jack Drive Shaft 1/2 Socket Bit Upgraded Stainless Steel Turbo Jack ez Crank Jack Adapter Tool Heavy Duty for RV Construction Dump Trailers

HVJ$21.0518 rev

3mo ago

Trailer Jack Drill Adapter 1 Inch Drive Shaft Stainless Steel Heavy Duty Adapter for Electric Drill Turbo Jack & EZ Crank Compatible 1/2 Socket Bit Power Jack Tool for RV Construction TrailerDIY

GXZZ$16.4735 rev

3mo ago

AMXTYYSZ [2-Pack] 28mm Trailer Jack Drill Adapter - Heavy-Duty Red Alloy Steel Power Crank Handle for 1 Studs - Black Non-Slip Safety Sleeve - High-Torque Jack Tool for RV Dump & Farm Trailers

Amxtyysz$16.9910 rev

5mo ago

2PCS EZ-Crank Trailer Jack Drill Adapter - Heavy Duty Power Drill Crank Handle for 1 Handle Studs 10X Faster Operation Tool for Timpte Dump Flatbed & Livestock Trailers (KIT (A+B))

Koongloong$16.375 rev

5mo ago

What buyers say about ez crank jack adapter tool

What buyers praise and complain about, mined from review topics.

What buyers love

Ease Of Use15%

“Easy to use”

Quality-Overall14%

“Build quality is excellent”

Assembly/Installation9%

“Easy to setup”

Advertised Vs Actual Product8%

“Works as advertised”

Size-Overall8%

“Fit perfect”

Value For Money7%

“Great value for the price”

Durability6%

“Very durable”

Efficiency5%

“Works ok”

Strength4%

“Its seriously heavy-duty with solid construction”

Material Quality3%

“The construction materials are excellent”

What buyers complain about

Durability24%

“Broke first use”

Quality-Overall13%

“Horrible quality”

Size-Overall11%

“nut was too small”

Functionality-Overall7%

“Wont turn a jack at all”

Metal Quality3%

“It is definitely made of cheap metal”

Value For Money3%

“The price is a little steep”

Advertised Vs Actual Product3%

“Does not perform as advertised”

Strength2%

“it is a little bit flimsy”

Add-Ons/Attachments2%

“The lack of giving the trailer jack adapter the fidth star was due to the cotter pin easily falling out when using”

Mounting2%

“Could use a heavier mounting bolt”

Top return reasons

Size-Overall46%

Compatibility-Overall14%

Functionality-Overall10%

Advertised Vs Actual Product7%

Defective Material/Parts5%

Durability4%

Mechanism Issues3%

Quality-Overall2%