Best Long Length Bits for Stainless Steel of 2026

Jennifer Fraser Avatar
Jennifer Fraser
Last Updated: 5 Feb 2026

* We independently evaluate all recommended products and services. If you click on links we provide, we may receive compensation.

If you're looking for high-quality drill bits for working with stainless steel, then long length bits are a great option to consider. These bits are designed to be longer than standard drill bits, which makes them ideal for drilling through thicker pieces of metal. They are also made from durable materials that can withstand the heat and pressure that comes with drilling through tough materials like stainless steel. With their sharp cutting edges and precise design, long length bits can help you achieve accurate and clean holes in your metalwork. So, if you're looking to tackle a stainless steel project, investing in a set of long length bits could be a wise choice.

At a Glance: Our Top Picks

KTHZI Blacksmith Drill Bit,16mm HSS Metric Cobalt Drill Bit for Metal,Stainless Steel Cover #TOP 1
KTHZI Blacksmith Drill Bit,16mm HSS Metric Cobalt Drill Bit for Metal,Stainless Steel
ftb score rating icon 9.9
Bosch 10x PRO Stainless Steel HSS-Co Twist Drill Bit Cover #TOP 2
Bosch 10x PRO Stainless Steel HSS-Co Twist Drill Bit
ftb score rating icon 9.8
Bosch 10x PRO Stainless Steel HSS-Co Twist Drill Bit Cover #TOP 3
Bosch 10x PRO Stainless Steel HSS-Co Twist Drill Bit
ftb score rating icon 9.6

Top 10 Long Length Bits for Stainless Steel

#TOP 1

KTHZI Blacksmith Drill Bit,16mm HSS Metric Cobalt Drill Bit for Metal,Stainless Steel

F-E-GSGZTC01P1
Black
150mm
KTHZI Blacksmith Drill Bit,16mm HSS Metric Cobalt Drill Bit for Metal,Stainless Steel Cover
KTHZI Blacksmith Drill Bit,16mm HSS Metric Cobalt Drill Bit for Metal,Stainless Steel,Brass,Plastic,Aluminium& Wood

Features
16mm Drill Bit:Cutting Edge Diameter:16mm,round Shank Diameter:12.7mm1/2",shank Length:57mm,total Length:150mm And 135°Point Angle.
HSS Material:Made Of 4241 High Speed Steel Is Hard,wear Resistant And Has High Resistance To Oxidation And Corrosion.Even Thick Plate Can Be Drilled Successfully.
135°Point Angle:The 135°point Angle Design Of The Drill Bit Is Conducive To Increasing Friction When Drilling,is Suitable For Harder Materials,improving Drilling Efficiency And Making Drilling Easy.
Wide Application:16mm HSS Drill Bit For Stainless Steel,Brass,Plastic,Aluminium& Wood-Easy Enough To Use On A Pistol Drill,hand Drills,bench Drills And Small Pillar Drill With A 13mm Chuck.
Product Packaging:It Is Supplied In A Plastic Storage Tube And Is Very Portable.
#TOP 2

Bosch 10x PRO Stainless Steel HSS-Co Twist Drill Bit

2608585876
Bronze
3 x 33 x 61 mm
Bosch 10x PRO Stainless Steel HSS-Co Twist Drill Bit Cover
Bosch 10x PRO Stainless Steel HSS-Co Twist Drill Bit (for Steel, Stainless steel, Ø 3,00 mm, Professional Accessory Rotary Drill/Drivers)

Features
Highly Efficient For Construction Workers And Installers: Long Life
Designed For Drilling In Stainless Steel
Scope Of Delivery: Bosch PRO Stainless Steel HSS-Co Twist Drill Bit, 3 X 33 X 61 Mm
For Drilling In Steel And Stainless Steel, Eg When Pre-Drilling Profiles And Beams For Anchors, Rivets, Threads, And Fixtures
Cylindrical Shank Compatible With Three-Jaw Drill Chucks
#TOP 3

Bosch 10x PRO Stainless Steel HSS-Co Twist Drill Bit

2608585875
Bronze
2.5 x 30 x 57 mm
Bosch 10x PRO Stainless Steel HSS-Co Twist Drill Bit Cover
Bosch 10x PRO Stainless Steel HSS-Co Twist Drill Bit (for Steel, Stainless steel, Ø 2,50 mm, Professional Accessory Rotary Drill/Drivers)

Features
Highly Efficient For Construction Workers And Installers: Long Life
Designed For Drilling In Stainless Steel
Scope Of Delivery: Bosch PRO Stainless Steel HSS-Co Twist Drill Bit, 2 X 30 X 57 Mm
For Drilling In Steel And Stainless Steel, Eg When Pre-Drilling Profiles And Beams For Anchors, Rivets, Threads, And Fixtures
Cylindrical Shank Compatible With Three-Jaw Drill Chucks
#TOP 4

kwb HI-NOX HSS M2 Metal Drill Bit Ø 4 mm with Special Point Geometry for Efficient Drilling in Stainless Steel

kwb
258640
multi-coloured
⌀ 4,0 mm
kwb HI-NOX HSS M2 Metal Drill Bit Ø 4 mm with Special Point Geometry for Efficient Drilling in Stainless Steel Cover
kwb HI-NOX HSS M2 Metal Drill Bit Ø 4 mm with Special Point Geometry for Efficient Drilling in Stainless Steel with Cordless Drills and Power Drills, Longer Battery Life

Features
"QUICK CUT" GEOMETRY: The Steel Drill Bits With Special Point Geometry And A 130° Point Angle Create Small Metal Chips, Providing Quick And Efficient Drilling. They Are Three Times Stronger Than Cobalt-Containing Drills.
EFFICIENT DRILLING: The HI-NOX HSS M2 Metal Drill Bit Features A Short, Specially Shaped Spiral Flute That Reduces The Grabbing Effect During Drilling In Metal Sheets, Making It Ideal For Sheet Metal Applications.
VERSATILE APPLICATIONS: The Metal Spiral Drill Bits Exhibit Excellent Cutting Performance, Especially In All Stainless Steel Varieties, And Are Also Suitable For Various Steel Types, Cast Iron, And Steel Castings.
EXTREME HEAT RESISTANCE: These HSS Drill Bits Are Highly Heat-Resistant And Stable Even Under Heavy Loads, Retaining Their Hardness And Preventing Damage To The Material At High Temperatures.
ENHANCED DURABILITY: The Shaft And Spiral Of The Cylindrical Steel Drill Bit Are Differentially Hardened To Reduce The Risk Of Breakage.
#TOP 5

Bosch 10x PRO Stainless Steel HSS-Co Twist Drill Bit

2608585879
Bronze
3.5 x 39 x 70 mm
Bosch 10x PRO Stainless Steel HSS-Co Twist Drill Bit Cover
Bosch 10x PRO Stainless Steel HSS-Co Twist Drill Bit (for Steel, Stainless steel, Ø 3,50 mm, Professional Accessory Rotary Drill/Drivers)

Features
Highly Efficient For Construction Workers And Installers: Long Life
Designed For Drilling In Stainless Steel
Scope Of Delivery: Bosch PRO Stainless Steel HSS-Co Twist Drill Bit, 3.5 X 39 X 70 Mm
For Drilling In Steel And Stainless Steel, Eg When Pre-Drilling Profiles And Beams For Anchors, Rivets, Threads, And Fixtures
Cylindrical Shank Compatible With Three-Jaw Drill Chucks
#TOP 6

kwb HI-NOX HSS M2 Metal Drill Bit Ø 4.2 mm for Efficient Drilling in Stainless Steel

kwb
258642
multi-coloured
⌀ 4,2 mm
kwb HI-NOX HSS M2 Metal Drill Bit Ø 4.2 mm for Efficient Drilling in Stainless Steel Cover
kwb HI-NOX HSS M2 Metal Drill Bit Ø 4.2 mm for Efficient Drilling in Stainless Steel with Cordless Drills and Drill Machines, Longer Battery Life

Features
SPECIAL ANGLE AND GEOMETRY: The Steel Drill Bits With A 130° Special Angle And "Quick Cut" Geometry Produce Small Metal Chips And Are Three Times Stronger Than Cobalt-Containing Drills.
SHORT SPIRAL FLUTE: The Kwb HI-NOX HSS M2 Metal Drill Bit Features A Short, Specially Shaped Spiral Flute, Reducing The Pulling Effect And Making It Ideal For Drilling In Metal Sheets.
REDUCED BREAKAGE RISK: The Shaft And Spiral Of The Cylindrical Steel Drill Bit Are Differently Hardened To Reduce The Risk Of Breakage.
OPTIMAL CUTTING PERFORMANCE: The Metal Spiral Drill Bits Exhibit Excellent Cutting Behavior, Especially In All Types Of Stainless Steel, And Are Suitable For All Types Of Steel, Cast Iron, And Steel Casting.
HIGH HEAT RESISTANCE: Even Under Heavy Loads, The HSS Drill Bits Are Extremely Heat-Resistant And Stable, Maintaining Their Hardness At High Temperatures Without Damage.
#TOP 7

kwb HI-NOX HSS M2 Metal Drill Bit Ø 9mm for Efficient Stainless Steel Drilling

kwb
258690
⌀ 9,0 mm
kwb HI-NOX HSS M2 Metal Drill Bit Ø 9mm for Efficient Stainless Steel Drilling Cover
kwb HI-NOX HSS M2 Metal Drill Bit Ø 9mm for Efficient Stainless Steel Drilling, Longer Battery Life

Features
QUICK CUT GEOMETRY: 130° Point Angle And Quick Cut Geometry Produce Small Metal Chips, Three Times Stronger Than Cobalt Drills.
EFFICIENT STAINLESS STEEL DRILLING: Ø9mm HSS M2 Metal Drill Bit With Special Point Geometry For Reduced Pull-In Effect And Longer Battery Life.
VERSATILE APPLICATION: Suitable For Both Battery-Powered And Corded Drills, Offering 6x Strength Compared To Traditional Cobalt Drills And Up To 10% Faster Stainless Steel Drilling.
OPTIMAL CUTTING PERFORMANCE: Designed For Stainless Steel, All Steel Types, Gray Cast Iron, And Steel Castings. Reduced Risk Of Breakage With Differentiated Hardened Shank And Spiral.
HIGH HEAT RESISTANCE: Even Under Heavy Loads, These HSS Drills Remain Stable And Retain Hardness At High Temperatures, Ensuring Durability.

Bosch 10x PRO Metal HSS-G Drill Bit

2608595062
Silver
Ø 5 mm
Bosch 10x PRO Metal HSS-G Drill Bit Cover
Bosch 10x PRO Metal HSS-G Twist Drill Bit Standard Length (for Non-ferrous metals, Steel, Ø 5,00 mm, Professional Accessory Rotary Drill/Drivers)

The Bosch HSS-G Drill Bit is a reliable tool that lasts up to twice as long as the Bosch PointTeQ Drill Bit, providing excellent value for your projects. Its cylindrical shank ensures compatibility with three-jaw drill chucks, making it easy to use with various rotary drill drivers. This drill bit is specifically designed for metal drilling, whether you're pre-drilling for anchors, rivets, or threads, or working with steel beams for installations. With dimensions of 5 x 52 x 86 mm, it’s perfect for both professional and DIY tasks.

What We Like
Longer lifespan than competitors
Compatible with standard drill chucks
Ideal for metal applications
Effective for pre-drilling tasks
#TOP 9

HLOFIZI 9mm Cobalt M42 Drill Bit , Titanium Twist Drill Bits for Metal, Stainless Steel

HLOFIZI
MCDB9MP1TIN4
9 mm
HLOFIZI 9mm Cobalt M42 Drill Bit , Titanium Twist Drill Bits for Metal, Stainless Steel Cover
HLOFIZI 9mm Cobalt M42 Drill Bit (1 Pack), Titanium Twist Drill Bits for Metal, Stainless Steel, Cast Iron and Wood

Features
UP To 5X Longer Life: Made Of M42 Cobalt High Speed Steel, Provide Extreme Durability And Resisting Breakage. Titanium Coating For High-Heat Resistant And Rust Protection
M42 8% Cobalt Metric Drill Bit
Prevent Walking: 135 Degrees Split Point For Precision Start NO WALKING, And Stays Sharper Longer Than Your Standard Drill Bit
Optimized Flute Design: Fast Chip Removal. Comes With Straight Shank. Size Markings On The Shank For Identifying Sizes Quickly
Efficiently And Clean: Fully Ground Technology For PRECEISION And FAST Drilling Clean, Burr-Free Holes
#TOP 10

1/4" Drill Bits Solid Carbide Drill Bits, Tungsten Carbide Drill Bit Set, Metal Drill Bit Set for Stainless Steel Hardened Steel Cast Iron Alloy Copper

HOYUSK
Drill-50-6.35*30*60-2pcsNew
1/4 in
1/4" Drill Bits Solid Carbide Drill Bits, Tungsten Carbide Drill Bit Set, Metal Drill Bit Set for Stainless Steel Hardened Steel Cast Iron Alloy Copper Cover
1/4" Drill Bits Solid Carbide Drill Bits, Tungsten Carbide Drill Bit Set, Metal Drill Bit Set for Stainless Steel Hardened Steel Cast Iron Alloy Copper, 2 Pcs New

Features
Tungsten Steel Material: Crafted From 0.6um Micro-Particle Cemented Carbide, HOYUSK's Carbide Drill Bits Provide Unmatched Wear Resistance And Strength. As An Exclusive Drill Bit For High Hardness And High-Speed Cutting Applications, It Significantly Improves Work Efficiency. The Metal Drill Bits For Steel Are Engineered To Handle Tough Materials With Ease, Ensuring Long-Lasting Performance.
Size:0.25" Drill Diameter; 1.18" Flute Length; 2.36" Overall Length
Versatile Use: Our Drill Bit Set For Metal Is Suitable For Drilling Through Stainless Steel, Aluminum Alloy, Cast Iron, Mold Steel, Copper. Widely Used In Maintenance Departments, Machine Shops, And Other Industries, This Drill Bit For Metal Provide Reliable Performance And Durability. Whether You're Working On A Specific Project Or Need A Versatile Drill Bit Set, HOYUSK Has The Perfect Solution.
Stable Clamping Design: The Clamping Stable Round Shank Design Of HOYUSK Drill Bits Ensures Stability During Operation, Preventing Shaking And Slipping. The Sharp Flutes On Our Metal Drill Bit Offer Quick, Smooth, And Neat Cuts With No Burrs, Thanks To Our Advanced Technology That Reduces Cutting Force And Drill Breakage Rate. HOYUSK Drill Bits For Steel Are Engineered For Hole Wall Quality And Overall Performance.
Sharp Spiral Flutes: The Sharp Spiral Flutes On Our Metal Drill Bits Ensure Neat And Smooth Cuts With High Cutting Edge Strength And Fast Cutting Speeds. The Spiral Groove Design Facilitates Smooth Chip Removal, With Large Chip Removal Space And Small Chip Removal Force, Reducing Drilling Heat And Pollution. Our Drill Bits For Metal Offer A Ideal Drilling Experience.
Buying Guide Image

Frequently Asked Questions (FAQs)

1. How long can you get a drill bit?

Bit size reflects the diameter of the body. Some projects call for specific drill bit sizes, but a bit set that includes sizes from 1/16 inch to 1/4 inch will work for many jobs around the home and workshop. You can add larger bits — 5/16-inch, 3/8-inch, 7/16-inch and 1/2-inch bits — if you need them.

2. What is a HSS drill bit?

HSS drill bits, an acronym for high speed steel drill bits are extremely hardwearing and particularly well designed for drilling into metal surfaces, as they are much more resistant to the heat generated from the fast speed operation. The front edges cut the material, whilst the spirals remove debris from the hole.

3. What is TCT drill bit?

The Irwin Metric TCT (Tungsten Carbide Tipped) Drill Bits offer precision drilling with stationary machines in hardened steel, cast iron, bronze alloys and manganese alloyed steel. ... A coolant should always be used when drilling with TCT twist drill bits.

Editor's Notes

During our long length bit for stainless steel research, we found 16 long length bit for stainless steel products and shortlisted 10 quality products. We collected and analyzed 41,030 customer reviews through our big data system to write the long length bits for stainless steel list. We found that most customers choose long length bits for stainless steel with an average price of £20.00.

The long length bits for stainless steel are available for purchase. We have researched hundreds of brands and picked the top brands of long length bits for stainless steel, including KTHZI, Bosch, kwb, HLOFIZI, HOYUSK.

Written by
Jennifer Fraser Avatar

Jennifer Fraser is a licensed contractor specializing in sales, maintenance, and kitchen, bathroom, and home appliances, tools, and utilities. She owns a store in Leeds where you can get any home and tool appliance. Jenny has a degree in literature, but she combines her knowledge and experience with her degree to publish DIY articles on solving home appliances issues to keep up the family enterprise.