Best Inch Twist Drill Bits in 2026

Daisy
Last Updated: Feb 6, 2026

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

HSS Cobalt Drill Bit Set 1/8 Inch 10Pcs M35 Co Twist Jobber Length Steel Metal Drill Bits
#TOP1
Hss Cobalt Drill Bit Set 1/8 Inch 10Pcs
8.3
PM SCORE
Read Review
HSS Cobalt Drill Bit Set 19/64 Inch 10Pcs M35 Co Twist Jobber Length Steel Metal Drill Bits
#TOP2
Hss Cobalt Drill Bit Set 19/64 Inch 10Pcs
5.0
PM SCORE
Read Review
HSS Cobalt Drill Bit Set 21/64 Inch 5Pcs M35 Co Twist Jobber Length Steel Metal Drill Bits
#TOP3
Hss Cobalt Drill Bit Set 21/64 Inch 5Pcs
4.9
PM SCORE
Read Review

* 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: 140 Items
  • PM Avg. Rating: 5.4 / 10
6 Products Evaluated
  • Highest Price: $29.99
  • Lowest Price: $10.99
  • Avg. Price: $20.32
#TOP1

Hss Cobalt Drill Bit Set 1/8 Inch 10Pcs M35 Co Twist Jobber Length Steel Metal Drill Bits

POWERMAX
MPCO0764
3.80 X 2.00 X 0.20 Inches
0.08 Pounds

Reviews for POWERMAX (PM Score)

8.3
Check on Amazon
Customer Reviews
SELLER SELLER SCORE AMAZON FULFILLED PRIME FREE SHIPPING
MAX-CRAFT 8.90 ✅ ✅ ✅

Features

✔️【DRILL BIT DIMENSION】:1/8"(Diameter) x 1-5/8"( Flute Length) x 2-3/4"(Overall Length)

✔️ 【COBALT MATERIAL】: HSS(M35) Cobalt Steel Enable Long Drilling Life and Fast Drilling Performance

✔️ 【SURFACE TREATMENT】: Gold Oxided Ember Finished Treatment Keeps High Hardness of Body Shank

✔️ 【SPLIT POINT ANGLE 135 DEG】: Split Point 135 Deg. Guarantee Self-Centering and Easy Quick Penetration

✔️ 【APPLICATION】: Drilling Through Stainless Steel, Metal, Steel, Cast Iron, Alloy Steel, Copper, Aluminum, Plastic..

#TOP2

Hss Cobalt Drill Bit Set 19/64 Inch 10Pcs M35 Co Twist Jobber Length Steel Metal Drill Bits

POWERMAX
MPCO1964
5.20 X 3.00 X 0.32 Inches
0.61 Pounds

Reviews for POWERMAX (PM Score)

5.0
Check on Amazon
Customer Reviews
SELLER SELLER SCORE AMAZON FULFILLED PRIME FREE SHIPPING
MAX-CRAFT 8.90 ✅ ✅ ✅

Features

✔️【DRILL BIT DIMENSION】:19/64"(Diameter) x 3-1/16"( Flute Length) x 4-3/8"(Overall Length)

✔️ 【COBALT MATERIAL】: HSS(M35) Cobalt Steel Enable Long Drilling Life and Fast Drilling Performance

✔️ 【SURFACE TREATMENT】: Gold Oxided Ember Finished Treatment Keeps High Hardness of Body Shank

✔️ 【SPLIT POINT ANGLE 135 DEG】: Split Point 135 Deg. Guarantee Self-Centering and Easy Quick Penetration

✔️ 【APPLICATION】: Drilling Through Stainless Steel, Metal, Steel, Cast Iron, Alloy Steel, Copper, Aluminum, Plastic..

#TOP3

Hss Cobalt Drill Bit Set 21/64 Inch 5Pcs M35 Co Twist Jobber Length Steel Metal Drill Bits

POWERMAX
MPCO2164
6.00 X 3.00 X 1.00 Inches
0.40 Pounds

Reviews for POWERMAX (PM Score)

4.9
Check on Amazon
Customer Reviews
SELLER SELLER SCORE AMAZON FULFILLED PRIME FREE SHIPPING
MAX-CRAFT 8.85 ❌ ❌ ❌

Features

✔️【DRILL BIT DIMENSION】:21/64"(Diameter) x 3-5/16"( Flute Length) x 4-5/8"(Overall Length)

✔️ 【COBALT MATERIAL】: HSS(M35) Cobalt Steel Enable Long Drilling Life and Fast Drilling Performance

✔️ 【SURFACE TREATMENT】: Gold Oxided Ember Finished Treatment Keeps High Hardness of Body Shank

✔️ 【SPLIT POINT ANGLE 135 DEG】: Split Point 135 Deg. Guarantee Self-Centering and Easy Quick Penetration

✔️ 【APPLICATION】: Drilling Through Stainless Steel, Metal, Steel, Cast Iron, Alloy Steel, Copper, Aluminum, Plastic..

#TOP4

Hss Cobalt Drill Bit Set 7/64 Inch 10Pcs M35 Co Twist Jobber Length Steel Metal Drill Bits

POWERMAX
MPCO0764
3.80 X 2.00 X 0.20 Inches

Reviews for POWERMAX (PM Score)

4.9
Check on Amazon
Customer Reviews
SELLER SELLER SCORE AMAZON FULFILLED PRIME FREE SHIPPING
MAX-CRAFT 8.95 ❌ ❌ ❌

Features

✔️【DRILL BIT DIMENSION】:7/64"(Diameter) x 1-1/2"( Flute Length) x 2-5/8"(Overall Length)

✔️ 【COBALT MATERIAL】: HSS(M35) Cobalt Steel Enable Long Drilling Life and Fast Drilling Performance

✔️ 【SURFACE TREATMENT】: Gold Oxided Ember Finished Treatment Keeps High Hardness of Body Shank

✔️ 【SPLIT POINT ANGLE 135 DEG】: Split Point 135 Deg. Guarantee Self-Centering and Easy Quick Penetration

✔️ 【APPLICATION】: Drilling Through Stainless Steel, Metal, Steel, Cast Iron, Alloy Steel, Copper, Aluminum, Plastic..

#TOP5

Hss Cobalt Drill Bit Set 5/16 Inch 5Pcs M35 Co Twist Jobber Length Steel Metal Drill Bits

POWERMAX
MPCO0516
6.00 X 2.00 X 2.00 Inches

Reviews for POWERMAX (PM Score)

4.9
Check on Amazon
Customer Reviews
SELLER SELLER SCORE AMAZON FULFILLED PRIME FREE SHIPPING
MAX-CRAFT 8.80 ❌ ❌ ❌

Features

✔️【DRILL BIT DIMENSION】:5/16"(Diameter) x 3-3/16"( Flute Length) x 4-1/2"(Overall Length)

✔️ 【COBALT MATERIAL】: HSS(M35) Cobalt Steel Enable Long Drilling Life and Fast Drilling Performance

✔️ 【SURFACE TREATMENT】: Gold Oxided Ember Finished Treatment Keeps High Hardness of Body Shank

✔️ 【SPLIT POINT ANGLE 135 DEG】: Split Point 135 Deg. Guarantee Self-Centering and Easy Quick Penetration

✔️ 【APPLICATION】: Drilling Through Stainless Steel, Metal, Steel, Cast Iron, Alloy Steel, Copper, Aluminum, Plastic..

#TOP6

Hss Cobalt Drill Bit Set 9/32 Inch 10Pcs M35 Co Twist Jobber Length Steel Metal Drill Bits

POWERMAX
MPCO0932
6.00 X 4.00 X 1.00 Inches
0.55 Pounds

Reviews for POWERMAX (PM Score)

4.8
Check on Amazon
Customer Reviews
SELLER SELLER SCORE AMAZON FULFILLED PRIME FREE SHIPPING
MAX-CRAFT 8.70 ✅ ✅ ✅

Features

✔️【DRILL BIT DIMENSION】:9/32"(Diameter) x 2-15/16"( Flute Length) x 4-1/4"(Overall Length)

✔️ 【COBALT MATERIAL】: HSS(M35) Cobalt Steel Enable Long Drilling Life and Fast Drilling Performance

✔️ 【SURFACE TREATMENT】: Gold Oxided Ember Finished Treatment Keeps High Hardness of Body Shank

✔️ 【SPLIT POINT ANGLE 135 DEG】: Split Point 135 Deg. Guarantee Self-Centering and Easy Quick Penetration

✔️ 【APPLICATION】: Drilling Through Stainless Steel, Metal, Steel, Cast Iron, Alloy Steel, Copper, Aluminum, Plastic..

Related
Top 10

Top 10 twist drill bits Brands on Amazon

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

Brand Count
Powermax 6

Top 10 twist drill bits Brands Pie Chart

We've carried out a comprehensive analysis of 140 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 $20.32, 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.