Is square hole drill bit profitable to sell on Amazon United States?

The niche generates $113K/yr across 35 tracked products. 0 of 4 products launched in the last 360 days are still selling. 90-day search growth is -5.4%. Flapen's verdict: Worth a look (59/100).

How competitive is the square hole drill bit niche?

32 brands and 42 sellers compete. The top 5 products take 48% of clicks and top 5 brands hold 49% of demand.

What do buyers complain about in square hole drill bit?

Top complaints mined from reviews: Quality-Overall, Size-Overall, Durability. The return rate is 1.4%.

When does demand for square hole drill bit peak?

Demand peaks in Jan; the busiest month runs 1.6× the quietest.

What does it cost to enter the square hole drill bit niche?

Listings span $5.19–$98.82; the average listing price is $30.94 (sweet spot $15–$100). The average incumbent carries 1,199 reviews — the moat a new listing must climb.

square hole drill bit

Worth a look

Shows a sweet-spot price point ($30.94 avg), but a failed launch gate (market size, growth, or returns) keeps it on the watch list.

Avg price

Incredible$30.94

avg listing price — sweet spot $15–$100

Quality gap

Great4.1★

avg incumbent rating — lower means beatable quality

Returns

Great1.4%

return rate — above 5% kills the launch gate

Price range

Great$5.19–$98.82

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

Brand share

Great49%

top-5 brand share — no brand owns this niche

Competition

Good48%

top-5 click share — leaders hold, buyers still browse

Review moat

Good1,199.26

avg incumbent reviews — the moat a new listing must climb

Conversion

Okay3.6%

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

Market size

Okay$113K

$113K/yr · 100K searches

Growth

Bad-5.4%

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

Signals No Dominant Brand Low Review Barrier

According to Flapen's Amazon United States niche tracking, square hole drill bit is a $113K/yr Amazon United States market (100K searches/yr). The top 5 brands hold 49% of demand. Demand peaks in Jan. Verdict: Worth a look — 59/100.

Data updated Jul 29, 2026 · scored weekly · How we score niches

square hole drill bit market data

Units sold / yr: 3K–4K; avg 0–100/product
Revenue / yr: $93K–$124K; units × avg price
Conversion rate: 3.6%
Avg BSR: #502
Page quality: 0%
Prime: 94%
Sponsored: 94%
Out of stock: 5.5%
Avg brand age: 47 months
Avg seller age: 179 days

Competition & brand share

The top 5 products take 48% of clicks — established leaders, but buyers still shop beyond them.

Brands

32 rising

Sellers

Top-5 brand share

49%

Top 20: 89%

Top-5 click share

48%

Top 20: 85%

Open market

46%

Devvicoo16%
SaferCCTV11%
Jecoupoon8%
YaeKoo8%
YGFRSTO6%
FURONGHUA6%

Demand & seasonality

Weekly Amazon search volume, last 104 weeks — -5.4% search growth over the last 90 days.

Peak months: Jan · busiest ÷ quietest = 1.6×

Open Trend

Top square hole drill bit search terms

square drill bit30K/yr +10.2%3.3% conv.
square hole drill bit32K/yr -11.7%1.7% conv.
square drill bit set7K/yr +23.5%4.3% conv.
mortise bit5K/yr -28.4%1.4% conv.
mortise drill bit6K/yr -18.1%1.7% conv.
square drill bits4K/yr +22.1%6.3% conv.
mortising bit5K/yr -31.9%0.6% conv.
mortise drill bit set4K/yr +6.0%2.4% conv.
square hole drill bits for wood5K/yr -40.1%1.3% conv.
square drill3K/yr -5.1%0.5% conv.

All search terms

Top square hole drill bit 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 24 tracked products in this niche — three views at once, no toggling.

Top sellers

by 90-day click share

Devvicoo 6PCS Square Hole Drill Bit Set for Mortise and Tenon Machine (Not Handheld) Bearing Steel Mortiser Bits - 5/8 9/16 1/2 3/8 5/16 1/4

Devvicoo$20.904.0★48 rev

Square Hole Drill Bit Steel Hardness Sharp Mortising Chisel Set 1/2-Inch 1/4-Inch 3/4inch 3/8-Inch 5/8-Inch 5/16-Inch 9/16-Inch Woodworking Mortiser Drill Bit-7pcs

SaferCCTV$75.634.1★766 rev

6pcs Square Hole Drill bits Mortise Chisel Drill Bit Tools 5/8 9/16 1/2 3/8 5/16 1/4 HSS Woodworking Hole Saw Mortising Chisel Mortiser Drill Bit Set Attachment for Mortise and Tenon Machine

YaeKoo$34.484.3★483 rev

Jecoupoon Square Hole Drill Bit 1/4 5/16 7/16 1/2 5/8 and Adapter

Jecoupoon$39.263.9★21 rev

4 Pcs Mortise Chisel Set 1/4 5/16 3/8 1/2 Inch Square Hole Drill Bits for Mortiser Wood Mortising Chisel Drill Bit Hollow Chisel Mortise and Tenon Drill Tools

YGFRSTO$19.544.2★58 rev

Newest

by launch date

SOCOJE 4PCS Square Hole Drill Bit Set for Wood Woodworking Mortising Chisel Drill with 6.4/8/9.5/12.7mm Sizes Includes Square Hole Drill Bit Adapter for Precise Woodworking Drilling

Socoje$55.225 rev

5mo ago

Square Hole Drill Bit Adapter with 4-Piece Square Hole Drill Bit Set Mortise and Tenon Jig Dual-Use Mortising Attachment for Drill Press & Hand Drill Mortising Machine Accessory

LuxNest$39.432 rev

8mo ago

Square Hole Drill Bit Set - 1/4 5/16 3/8 1/2 Mortise Bits for Mortising Machines - Enhance Efficiency & Minimize Labor in Construction Projects

FURONGHUA$24.3414 rev

9mo ago

toolant 2 Inch SQ2 Square Bit Magnetic Anti-Slip Impact Screwdriver Bits 10pcs Impact Steel X2 Driver Bit Set with CNC-Machined Tips for Impact Drivers

toolant$12.9458 rev

10mo ago

Devvicoo 6PCS Square Hole Drill Bit Set for Mortise and Tenon Machine (Not Handheld) Bearing Steel Mortiser Bits - 5/8 9/16 1/2 3/8 5/16 1/4

Devvicoo$20.9048 rev

1y ago

What buyers say about square hole drill bit

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

What buyers love

Quality-Overall31%

“Best quality”

Value For Money11%

“Great value”

Size-Overall11%

“They fit much better than the ones I already had they are great”

Advertised Vs Actual Product10%

“As advertised”

Ease Of Use6%

“Very Handy”

Durability4%

“durable, Strong”

Sharpness4%

“The bits/cutters seem very sharp”

Correct Contents3%

“Nice compact bit set for SQ2 Screws”

Strength3%

“seems sturdy”

Functionality-Overall3%

“practical and functional”

What buyers complain about

Quality-Overall30%

“Poor quality”

Size-Overall17%

“Does not fit a Delta floor drill press”

Durability7%

“Flathead bit broke on first use”

Advertised Vs Actual Product7%

“couldnt get the results shown on the videos”

Instructions/User Manual/Troubleshooting6%

“The directions are not great”

Material Quality4%

“Now it's a cheap plastic bag”

Ease Of Use4%

“I couldnt use it”

Precision Of Cut4%

“bits are sharp however two major problems”

Mounting4%

“No bolts to attach to drill chuck”

Compatibility-Overall2%

“Not compatible with Delta drill press mortise attachment”

Top return reasons

Size-Overall34%

Compatibility-Overall19%

Defective Material/Parts14%

Functionality-Overall8%

Advertised Vs Actual Product5%

Value For Money4%

Add-Ons/Attachments3%

Quality-Overall2%

Mechanism Issues2%

Sharpness2%

Common questions

Is square hole drill bit profitable to sell on Amazon United States?: The niche generates $113K/yr across 35 tracked products. 0 of 4 products launched in the last 360 days are still selling. 90-day search growth is -5.4%. Flapen's verdict: Worth a look (59/100).
How competitive is the square hole drill bit niche?: 32 brands and 42 sellers compete. The top 5 products take 48% of clicks and top 5 brands hold 49% of demand.
What do buyers complain about in square hole drill bit?: Top complaints mined from reviews: Quality-Overall, Size-Overall, Durability. The return rate is 1.4%.
When does demand for square hole drill bit peak?: Demand peaks in Jan; the busiest month runs 1.6× the quietest.
What does it cost to enter the square hole drill bit niche?: Listings span $5.19–$98.82; the average listing price is $30.94 (sweet spot $15–$100). The average incumbent carries 1,199 reviews — the moat a new listing must climb.