Best Inch Twist Drill Bits in 2026

Daisy
Last Updated: Jul 17, 2026

At a Glance: Our Top Picks for Inch Twist Drill Bits

Irwin 62132-1/2-Inch by 12-Inch Black Oxide Aircraft Twist Drill Bit
#TOP1
Irwin 62132-1/2-Inch By 12-Inch Black Oxide Aircraft Twist
9.8
PM SCORE
Irwin Tools 49613 Brad Point Drill Bit, 3/16"
#TOP2
Irwin Tools 49613 Brad Point Drill Bit, 3/16"
9.3
PM SCORE
Irwin 39108 1/2-Inch by 18-Inch Installer Twist Drill Bit
#TOP3
Irwin 39108 1/2-Inch By 18-Inch Installer Twist Drill
8.7
PM SCORE

* PickSmartly editors independently research, review, and endorse the top products through comprehensive data analysis. We may earn a commission for qualifying purchases made through our product links.

Summary of the Best Inch Twist Drill Bits of 2026

Market Overview
Inch Twist Drill Bits Reviewed
  • Reviews Analyzed: 1598 Items
  • PM Avg. Rating: 7.0 / 10
6 Products Evaluated
  • Highest Price: $74.48
  • Lowest Price: $9.14
  • Avg. Price: $42.86
#TOP1

Irwin 62132-1/2-Inch By 12-Inch Black Oxide Aircraft Twist Drill Bit

IRWIN TOOLS
62132
14.50 X 1.75 X 0.50 Inches
0.60 Pounds
SELLER SELLER SCORE AMAZON FULFILLED PRIME FREE SHIPPING
BEYOND YOUR HOME 9.95

Features

This product is easy to use.

This product is highly durable

This product is manufactured in China.

Constructed of M-42 8 percent cobalt high speed steel for super abrasive resistance in tough metals

Heavy duty spiral flute design produces faster chip ejection

Shorter cutting lips reduce torque for drilling in high tensile strength materials.

135-degree split point reduces feed pressure for easier penetration without work hardening

Constructed of M-42 8 percent cobalt high speed steel for super abrasive resistance in tough metals

Heavy duty spiral flute design produces faster chip ejection

Shorter cutting lips reduce torque for drilling in high tensile strength materials.

135-degree split point reduces feed pressure for easier penetration without work hardening

Irwin Tools 49613 Brad Point Drill Bit, 3/16"

IRWIN
49613
0.27 X 2.00 X 0.26 Inches
0.02 Pounds
SELLER SELLER SCORE AMAZON FULFILLED PRIME FREE SHIPPING
MaxWarehouse 9.82

Features

Brad Point Drill Bits

Brad point tip provides accurate positioning for starting the hole. Diameter - 3/16 Inch. Shank Size - 3/16 Inch. Twist Length - 2-1/16 Inch. Overall Length - 3-3/8 Inch

Bit is precision ground for use in furniture making, doweling, cabinetry, and other woodworking applications where an exact hole size is required

Spur cutting edges reduce splintering and ensure a smooth, clean hole

Wide flutes provide a fast, continuous flow of chips

Irwin 39108 1/2-Inch By 18-Inch Installer Twist Drill Bit

IRWIN TOOLS
39108
18.00 X 2.00 X 1.00 Inches
0.60 Pounds
SELLER SELLER SCORE AMAZON FULFILLED PRIME FREE SHIPPING
MaxWarehouse 9.82

Features

This product is easy to use.

This product is highly durable

This product is manufactured in China

18" long, 1/2" diameter, .370" shank

Hole in flute (head) makes it easy to pull wires through hole in wall

Boring action is faster, smoother, cleaner in most every material encountered in wiring installations

Longer flute section for deeper boring

Special flute finishing process assures quick chip removal, no clogging, no binding

Irwin Tools 48213 Wood Auger Bit 13/16" X 24"X 7/16" Hex

IRWIN TOOLS
48213
25.50 X 1.75 X 0.42 Inches
1.04 Pounds
SELLER SELLER SCORE AMAZON FULFILLED PRIME FREE SHIPPING
Amazon.com 9.68

Features

Auger bit has a medium-fast screw point for general wood-boring applications

These auger bits have an extra-long twist for boring large poles, construction timbers and more

Each auger drill bit has a hex shank design for use in impact-wrench drills

A full-length heat treatment guards against bending in heavy-duty applications and strengthens the twist where the greatest strain occurs

Single spur, cutter and side lip bore through creosoted poles with minimal clogging, binding or stopping to clear chips

Irwin Tools 47009 Power Drill Power Pole Auger Bits, 7/16" Shank, 9/16" Diameter, 29" Total Length, Single

IRWIN TOOLS
47009
31.25 X 1.50 X 0.42 Inches
0.01 Pounds
SELLER SELLER SCORE AMAZON FULFILLED PRIME FREE SHIPPING
Westcarb Products 8.48

Features

These auger bits use a medium-fast screw point that is great for general wood-drilling applications

Each auger bit has an extra-long twist for drilling in large poles, construction timbers and more

Each auger drill bit has a 7/16-inch adaptable hex shank that can be removed to use a round shank

Auger bits have a cutting spur that scribes the outside of the hole during drilling for a smooth, clean hole

Bit can be resharpened

Irwin Tools 47012 Power Drill Power Pole Auger Bits, 5/8" Shank, 3/4" Diameter, 29" Total Length, Single

IRWIN TOOLS
47012
37.00 X 2.00 X 0.50 Inches
1.00 Pounds
SELLER SELLER SCORE AMAZON FULFILLED PRIME FREE SHIPPING
Hugo's Online 9.55

Features

Power Drill Power Pole Auger Bits

Single spur, cutter and side lip design bore through creosoted poles without clogging, binding, or stopping to clear chips

Extra-long twist is ideal for boring large poles, construction timbers and for multiple timber applications

All bits feature 7/16'' adaptable hex shank

Simply remove it to use round shank

Top 10 twist drill bits Brands on Amazon

Here is the list of top-rated brands that were evaluated by PM.

Brand Count
Irwin Tools 5
Irwin 1

Top 10 twist drill bits Brands Pie Chart


We've carried out a comprehensive analysis of 1,598 reviews on twist drill bits, using our selection criteria to identify the best options in the home improvement. Our findings reveal that most customers typically select twist drill bits priced around $42.86, with top brands including amoolo, gmtools, behappy, craft911, caroller, rocaris, dewalt, hurricane and becollo and sabre tools

Our team of expert editors reviewed these high-quality items and handpicked the top 6 twist drill bits for your consideration. We've also done extensive research on numerous sellers, identifying the best ones in the home improvement category. These include amoolo direct, gmtools us, goldmoon industry, excellent quality!, drill bits center, rocaris direct, amazon.com, sumex tools and gmtools us ii and behappy crafts co.,ltd. .

We are dedicated to assisting our users in finding the right bits Products based on their needs, saving them considerable time when choosing which twist drill bits to buy. We take pride in the number of satisfied users we've helped through our thorough and insightful reviews.