Best Reduced Shank Drill Bits of 2026

Harvey Wall Avatar
Harvey Wall
Last Updated: 2 Feb 2026

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Reduced shank drill bits are an essential tool for those who need to drill larger holes in tough materials such as metal, wood, and plastic. These drill bits have a shank that is smaller in diameter than the cutting end, allowing them to fit into standard size chucks. This feature makes them versatile and compatible with a wide range of drilling machines. Reduced shank drill bits are available in different sizes, materials, and shapes to suit various drilling needs. They are designed to deliver precision and accuracy, making them an excellent choice for both DIY enthusiasts and professionals alike.

At a Glance: Our Top Picks

Grevosea 16mm Reduced Shank Drill Bit Metal Drill Bit Cobalt Drill Bits for Hardened Steel Metal Alloy and Building Engineering Woodworking DIY Projects Cover #TOP 1
Grevosea 16mm Reduced Shank Drill Bit Metal Drill Bit Cobalt Drill Bits for Hardened Steel Metal Alloy and Building Engineering Woodworking DIY Projects
ftb score rating icon 9.9
Bosch Professional PointTeQ HSS Twist Drill Bit (for Metal, Reduced Shank, 16 x 120 x 178 mm, Accessories for Drill Driver) Cover #TOP 2
Bosch Professional PointTeQ HSS Twist Drill Bit (for Metal, Reduced Shank, 16 x 120 x 178 mm, Accessories for Drill Driver)
ftb score rating icon 9.8
Bosch Professional PointTeQ HSS Twist Drill Bit (for Metal, Reduced Shank, 20 x 140 x 205 mm, Accessories for Drill Driver) Cover #TOP 3
Bosch Professional PointTeQ HSS Twist Drill Bit (for Metal, Reduced Shank, 20 x 140 x 205 mm, Accessories for Drill Driver)
ftb score rating icon 9.6

Top 10 Reduced Shank Drill Bits

#TOP 1

Grevosea 16mm Reduced Shank Drill Bit Metal Drill Bit Cobalt Drill Bits for Hardened Steel Metal Alloy and Building Engineering Woodworking DIY Projects

632369_1_AkyjEVRQ
Gold and Black
Grevosea 16mm Reduced Shank Drill Bit Metal Drill Bit Cobalt Drill Bits for Hardened Steel Metal Alloy and Building Engineering Woodworking DIY Projects Cover
Grevosea 16mm Reduced Shank Drill Bit Metal Drill Bit Cobalt Drill Bits for Hardened Steel Metal Alloy and Building Engineering Woodworking DIY Projects

Features
Quality Material: This Drill Bit For Stainless Steel Is Made Of High Speed Steel, With High Hardness, Sharpness And Good Durability, Ideal For Drilling In Cast Iron, Stainless Steel, Hard Metal, Copper And So On
Professional Drill Bits: You Will Receive 1pcs 5/8"(16mm) Drill Bit For Metal, With 10mm/0.39" Diameter Shank. Overall Length Is 150mm/5.9", Please Check If Your Drill Bit Size Is Suitable
Wide Application: Drill Bits For Hardened Steel Are Ideal For Drilling Steel, Aluminum Alloy, Iron, Copper, Brass, Wood, Acrylic, Plastic, Etc. It Is Widely Used In Engineering, Woodworking, Home DIY Projects And So On
Efficient Drilling: With A 135 Degree Point Tip Design, This Metal Drill Bit Penetrates Hard Materials Without The Need For A Pilot Hole. Straight Round Shank Design With Better Concentricity For Precise Drilling Results
Black And Gold Oxide Finish: The Surface Is Treated With Black And Gold Oxide Finish, Make It Corrosion And Rust Resistant. Also Can Apply Lubricant Better For Smoother Drilling
#TOP 2

Bosch Professional PointTeQ HSS Twist Drill Bit (for Metal, Reduced Shank, 16 x 120 x 178 mm, Accessories for Drill Driver)

2608577310
Ø 16 mm
Bosch Professional PointTeQ HSS Twist Drill Bit (for Metal, Reduced Shank, 16 x 120 x 178 mm, Accessories for Drill Driver) Cover
Bosch Professional PointTeQ HSS Twist Drill Bit (for Metal, Reduced Shank, 16 x 120 x 178 mm, Accessories for Drill Driver)

Features
High Durability: The Increased Speed Of The Drill Bit Means Less Heat Is Built Up, Reducing Wear
Saves Time: The HSS Twist Drill Bit PointTeQ With Reduced Shank Enables You To Drill Through Metal Quickly Thanks To The Special Design Of The Drill Bit Tip
Reduced Shank: To Use Drill Bits With Larger Diameters In Machines With A Small Drill Chuck, You Can Use The PointTeQ HSS Twist Drill Bit With Reduced Shank (Ø: 10 Mm)
Precision Work: The Self-Centering PointTeq Tip Design Prevents Slipping And Allows An Easy And Efficient Start
Compatibility: Suitable For All Bench Drills And Rotary Combi Drills For Making Holes And Centre Holes Through Alloyed And Mild Steel, Non-Ferrous Metals, Cast Steel, Cast Iron And Plastic
#TOP 3

Bosch Professional PointTeQ HSS Twist Drill Bit (for Metal, Reduced Shank, 20 x 140 x 205 mm, Accessories for Drill Driver)

2608577315
Ø 20 mm
Bosch Professional PointTeQ HSS Twist Drill Bit (for Metal, Reduced Shank, 20 x 140 x 205 mm, Accessories for Drill Driver) Cover
Bosch Professional PointTeQ HSS Twist Drill Bit (for Metal, Reduced Shank, 20 x 140 x 205 mm, Accessories for Drill Driver)

Features
High Durability: The Increased Speed Of The Drill Bit Means Less Heat Is Built Up, Reducing Wear
Saves Time: The HSS Twist Drill Bit PointTeQ With Reduced Shank Enables You To Drill Through Metal Quickly Thanks To The Special Design Of The Drill Bit Tip
Reduced Shank: To Use Drill Bits With Larger Diameters In Machines With A Small Drill Chuck, You Can Use The PointTeQ HSS Twist Drill Bit With Reduced Shank (Ø: 10 Mm)
Precision Work: The Self-Centering PointTeq Tip Design Prevents Slipping And Allows An Easy And Efficient Start
Compatibility: Suitable For All Bench Drills And Rotary Combi Drills For Making Holes And Centre Holes Through Alloyed And Mild Steel, Non-Ferrous Metals, Cast Steel, Cast Iron And Plastic
#TOP 4

Bosch Professional PointTeQ HSS Twist Drill Bit (for Metal, Reduced Shank, 12.5 x 101 x 151 mm, Accessories for Drill Driver)

2608577303
Ø 12.5 mm
Bosch Professional PointTeQ HSS Twist Drill Bit (for Metal, Reduced Shank, 12.5 x 101 x 151 mm, Accessories for Drill Driver) Cover
Bosch Professional PointTeQ HSS Twist Drill Bit (for Metal, Reduced Shank, 12.5 x 101 x 151 mm, Accessories for Drill Driver)

Features
High Durability: The Increased Speed Of The Drill Bit Means Less Heat Is Built Up, Reducing Wear
Saves Time: The HSS Twist Drill Bit PointTeQ With Reduced Shank Enables You To Drill Through Metal Quickly Thanks To The Special Design Of The Drill Bit Tip
Reduced Shank: To Use Drill Bits With Larger Diameters In Machines With A Small Drill Chuck, You Can Use The PointTeQ HSS Twist Drill Bit With Reduced Shank (Ø: 10 Mm)
Precision Work: The Self-Centering PointTeq Tip Design Prevents Slipping And Allows An Easy And Efficient Start
Compatibility: Suitable For All Bench Drills And Rotary Combi Drills For Making Holes And Centre Holes Through Alloyed And Mild Steel, Non-Ferrous Metals, Cast Steel, Cast Iron And Plastic
#TOP 5

TOP-VIGOR 14.5mm Reduced Shank Twist Drill Bits with 10mm Shank, High Speed Steel 4341 Cutting Diameter Drilling Bits for Stainless Steel Alloy Metal Plastic Wood

TK3352D
14.5mm
TOP-VIGOR 14.5mm Reduced Shank Twist Drill Bits with 10mm Shank, High Speed Steel 4341 Cutting Diameter Drilling Bits for Stainless Steel Alloy Metal Plastic Wood Cover
TOP-VIGOR 14.5mm Reduced Shank Twist Drill Bits with 10mm Shank, High Speed Steel 4341 Cutting Diameter Drilling Bits for Stainless Steel Alloy Metal Plastic Wood

Features
High Speed Steel Tool: The Twist Drill Bits Made Of High Speed Steel 4341 Which Are Good For Most General Purpose Applications, Offering A Combination Of Hardness And Toughness For Wear Resistance. High Cutting Edge Strength, Fast Cutting Speed.
Features: Cutting Edge Diameter : 14.5mm; Shank Diameter : 10mm / 0.39"; Cutting Edge Length: 56mm / 2.2"; Total Length : 150mm / 6". Package:1 Piece.
Versatile Uses: For Use In A Wide Range Of Stainless Steel, Aluminum Alloy, Iron, Copper, Brass, Wood, Plastic, And Other Metal Materials. Suitable For Hand Drills, Bench Drills, Etc. Tri-Flat On The Shank Of Drills Are Constructed For Tighter Chucking Maximizing Security For Precise Holes.
Reduced Shank: Reduced Shank Drill Expands The Size Range Capacity Of A Portable Drill Chuck. Common Flute And Overall Length For Minimal Adjustment During Tool Changes. Sharp And Spiral Cutting Edge Provides Neat And Smooth Cuts.
Black & Gold Oxide Finish: Premium Gold Titanium And Black Nitride Dual Coating Can Apply Lubricant Better For Smoother Drilling And Is More Durable And Corrosion Resistant. Spiral Groove Facilitates The Export Of Metal Chip, Saving Time And Effort In Operation.
#TOP 6

TOP-VIGOR 15.5mm Reduced Shank Twist Drill Bits with 10mm Shank, High Speed Steel 4341 Cutting Diameter Drilling Bits for Stainless Steel Alloy Metal Plastic Wood

TK3352F
15.5mm
TOP-VIGOR 15.5mm Reduced Shank Twist Drill Bits with 10mm Shank, High Speed Steel 4341 Cutting Diameter Drilling Bits for Stainless Steel Alloy Metal Plastic Wood Cover
TOP-VIGOR 15.5mm Reduced Shank Twist Drill Bits with 10mm Shank, High Speed Steel 4341 Cutting Diameter Drilling Bits for Stainless Steel Alloy Metal Plastic Wood

Features
High Speed Steel Tool: The Twist Drill Bits Made Of High Speed Steel 4341 Which Are Good For Most General Purpose Applications, Offering A Combination Of Hardness And Toughness For Wear Resistance. High Cutting Edge Strength, Fast Cutting Speed.
Features: Cutting Edge Diameter : 15.5mm; Shank Diameter : 10mm / 0.39"; Cutting Edge Length: 56mm / 2.2"; Total Length : 150mm / 6". Package:1 Piece.
Versatile Uses: For Use In A Wide Range Of Stainless Steel, Aluminum Alloy, Iron, Copper, Brass, Wood, Plastic, And Other Metal Materials. Suitable For Hand Drills, Bench Drills, Etc. Tri-Flat On The Shank Of Drills Are Constructed For Tighter Chucking Maximizing Security For Precise Holes.
Reduced Shank: Reduced Shank Drill Expands The Size Range Capacity Of A Portable Drill Chuck. Common Flute And Overall Length For Minimal Adjustment During Tool Changes. Sharp And Spiral Cutting Edge Provides Neat And Smooth Cuts.
Black & Gold Oxide Finish: Premium Gold Titanium And Black Nitride Dual Coating Can Apply Lubricant Better For Smoother Drilling And Is More Durable And Corrosion Resistant. Spiral Groove Facilitates The Export Of Metal Chip, Saving Time And Effort In Operation.
#TOP 7

TOP-VIGOR 14mm Reduced Shank Twist Drill Bits, 14mm Metal Drill Bits for Hard Steel with 10mm Shank, HSS 4341 Cutting Diameter Drilling Bits for Stainless Steel Alloy Metal Plastic Wood

14mm
Baked yellow
14mm
TOP-VIGOR 14mm Reduced Shank Twist Drill Bits, 14mm Metal Drill Bits for Hard Steel with 10mm Shank, HSS 4341 Cutting Diameter Drilling Bits for Stainless Steel Alloy Metal Plastic Wood Cover
TOP-VIGOR 14mm Reduced Shank Twist Drill Bits, 14mm Metal Drill Bits for Hard Steel with 10mm Shank, HSS 4341 Cutting Diameter Drilling Bits for Stainless Steel Alloy Metal Plastic Wood

Features
High Speed Steel Tool: The Twist Drill Bits Made Of High Speed Steel 4341 Which Are Good For Most General Purpose Applications, Offering A Combination Of Hardness And Toughness For Wear Resistance. High Cutting Edge Strength, Fast Cutting Speed.
Features: Cutting Edge Diameter : 14mm; Shank Diameter : 10mm / 0.39"; Cutting Edge Length: 56mm / 2.2"; Total Length : 150mm / 6". Package:1 Piece.
Versatile Uses: For Use In A Wide Range Of Stainless Steel, Aluminum Alloy, Iron, Copper, Brass, Wood, Plastic, And Other Metal Materials. Suitable For Hand Drills, Bench Drills, Etc. Tri-Flat On The Shank Of Drills Are Constructed For Tighter Chucking Maximizing Security For Precise Holes.
Reduced Shank: Reduced Shank Drill Expands The Size Range Capacity Of A Portable Drill Chuck. Common Flute And Overall Length For Minimal Adjustment During Tool Changes. Sharp And Spiral Cutting Edge Provides Neat And Smooth Cuts.
Black & Gold Oxide Finish: Premium Gold Titanium And Black Nitride Dual Coating Can Apply Lubricant Better For Smoother Drilling And Is More Durable And Corrosion Resistant. Spiral Groove Facilitates The Export Of Metal Chip, Saving Time And Effort In Operation.
#TOP 8

sourcing map 16mm Reduced Shank Twist Drill Bits

a19102500ux0089
16mm
sourcing map 16mm Reduced Shank Twist Drill Bits Cover
sourcing map Reduced Shank Twist Drill Bits 16mm High Speed Steel 4241 with 10mm Shank for Aluminum Alloy Steel Metal Plastic Wood

The sourcing map Twist Drill Bits are designed for versatility and efficiency. With a cutting edge diameter of 16mm and a reduced shank, these high-speed steel bits allow you to use your portable drill chuck more effectively. The sharp spiral flutes ensure clean and smooth cuts, enhancing your drilling experience. Additionally, the black nitride dual coating improves lubrication, making drilling smoother and extending the bits' lifespan. You can confidently use these drill bits on a variety of materials, including metals and plastics.

What We Like
High speed steel durability
Sharp spiral flutes for clean cuts
Reduced shank for versatility
Corrosion resistant coating
Suitable for various materials
#TOP 9

Sivitec 18mm x 150mm HSS Twist Drill Bit for Metal Drilling, Reduced Shank

Sivitec
Sivitec 18mm x 150mm HSS Twist Drill Bit for Metal Drilling, Reduced Shank Cover
Sivitec 18mm x 150mm HSS Twist Drill Bit for Metal Drilling, Reduced Shank

Features
Precise Metric Dimensions: 18mm Diameter And 150mm Overall Length, Designed For Accurate Metal Drilling Applications.
High-Quality HSS Twist Drill Bit: Crafted From Premium High-Speed Steel For Exceptional Durability And Long-Lasting Performance.
Versatile Application: Suitable For Drilling Into Various Metals, Including Steel, Aluminium, And Other Alloys.
Reduced Shank Design: Allows For Increased Clearance And Improved Chip Removal During Drilling Operations.
Efficient Cutting Edges: Optimised Flute Geometry And Cutting Edges Ensure Smooth, Clean Holes With Minimal Burring.
#TOP 10

sourcing map Reduced Shank Twist Drill Bits 25mm Black Nitride & Gold Titanium Coated High Speed Steel 4341 with 12.7mm (1/2") Shank for Stainless Steel Alloy Metal Plastic Wood

a19102500ux0076
25mm x 12.7mm
sourcing map Reduced Shank Twist Drill Bits 25mm Black Nitride & Gold Titanium Coated High Speed Steel 4341 with 12.7mm (1/2") Shank for Stainless Steel Alloy Metal Plastic Wood Cover
sourcing map Reduced Shank Twist Drill Bits 25mm Black Nitride & Gold Titanium Coated High Speed Steel 4341 with 12.7mm (1/2") Shank for Stainless Steel Alloy Metal Plastic Wood

Features
High Speed Steel Tool: The Twist Drill Bits Are Good For Most General Purpose Applications, Offering A Combination Of Hardness And Toughness For Wear Resistance. High Cutting Edge Strength, Fast Cutting Speed.
Features: Cutting Edge Diameter : 25mm / 1.0"; Shank Diameter : 12.7mm / 1/2"; Cutting Edge Length: 55mm / 2.17"; Total Length : 150mm / 6.0"; Cutting Direction: Right Hand
Versatile Uses: For Use In A Wide Range Of Stainless Steel, Aluminum Alloy, Iron, Copper, Brass, Wood, Plastic, And Other Metal Materials. Suitable For Hand Drills, Bench Drills, Etc. Tri-Flat On The Shank Of Drills Are Constructed For A Tighter Clamp, Maximizing Security For Precise Holes.
Reduced Shank: Reduced Shank Drill Expands The Size Range Capacity Of A Portable Drill Chuck. Common Flute And Overall Length For Minimal Adjustment During Tool Changes. Sharp And Spiral Cutting Edge Provides Neat And Smooth Cuts.
Black & Gold Finish: Premium Gold Titanium And Black Nitride Dual Coating Can Apply Lubricant Better For Smoother Drilling And Is More Durable And Corrosion Resistant. Spiral Groove Facilitates The Export Of Metal Chip, Saving Time And Effort In Operation.
Buying Guide Image

Frequently Asked Questions (FAQs)

1. What is a reduced shank drill bit?

Reduced-shank drill bits have a shank with a smaller diameter than their cutting head. They can drill large holes while still being compatible with standard sizes of drill chucks on handheld drills. Reduced-shank drill bits are used in maintenance and repair applications.

2. What is the purpose of a reduced diameter shank?

Reduced Shank - Usually 1/4", 3/8", or 1/2" and are designed to allow a larger diameter drill to be used with a chuck capable of holding only smaller diameter drills.

3. What are the three main types of drill bits?

Drill bits are generally classified as Twist Drill, Counterbore, Countersink, Flat Bottom Boring, and Specialty. On our web site we have divided these into two categories: Drill Bits - Normally used with hand held drills or drill presses fitted with standard chucks.

Editor's Notes

During our reduced shank drill bit research, we found 116 reduced shank drill bit products and shortlisted 10 quality products. We collected and analyzed 1,986 customer reviews through our big data system to write the reduced shank drill bits list. We found that most customers choose reduced shank drill bits with an average price of £20.00.

The reduced shank drill bits are available for purchase. We have researched hundreds of brands and picked the top brands of reduced shank drill bits, including Grevosea, Bosch, TOP-VIGOR, sourcing map, Sivitec.

Written by
Harvey Wall Avatar

Harvey Wall was born and raised in Norwich. He mastered the art of tool production and finished at the prestigious Norwich University. His area of interest include cutting tools, abrasive finishing and power tools. Harvey is always looking for ways to improve the finesse of industrial tools via his myriads of researches. He also shares some of his experiences on many platforms while writing on tool products.