Best Extra Long Drill Bits for Metal of 2026

Jennifer Fraser Avatar
Jennifer Fraser
Last Updated: 5 Feb 2026

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These extra long drill bits for metal are designed to provide precise and efficient drilling in hard materials. With their extended length, they are perfect for reaching deep and narrow spaces that standard drill bits cannot access. The high-quality construction ensures durability and strength, allowing for smooth and accurate drilling without compromising on performance. Whether you are a professional or a DIY enthusiast, these extra long drill bits are a valuable addition to your toolkit, making metal drilling tasks easier and more convenient.

At a Glance: Our Top Picks

sourcing map HSS Extra Long Drill Bits Cover #TOP 1
sourcing map HSS Extra Long Drill Bits
ftb score rating icon 9.9
sourcing map HSS Extra Long Twist Drill Bits Cover #TOP 2
sourcing map HSS Extra Long Twist Drill Bits
ftb score rating icon 9.8
sourcing map Extra Long Twist Drill Bits Cover #TOP 3
sourcing map Extra Long Twist Drill Bits
ftb score rating icon 9.6

Top 9 Extra Long Drill Bits for Metal

sourcing map HSS Extra Long Drill Bits

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sourcing map HSS Extra Long Drill Bits Cover
sourcing map HSS(High Speed Steel) Extra Long Twist Drill Bits, 6mm Drill Diameter 300mm Length for Hardened Metal Woodwork Plastic Aluminum Alloy 2 Pcs

The sourcing map Extra Long Bits are designed for precision and durability. With a 6mm diameter and a length of 300mm, these high-speed steel drill bits are perfect for various materials including non-ferrous metals and hard plastics. Their twisted design enhances cutting accuracy and helps prevent displacement during use, making drilling easier and faster. Additionally, the robust HSS construction ensures a longer drilling life, giving you reliable performance for both professional and DIY projects.

What We Like
Long-lasting high-speed steel
Improved cutting accuracy
Suitable for various materials
Avoids drill bit displacement
Convenient for DIY and professionals

sourcing map HSS Extra Long Twist Drill Bits

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sourcing map HSS Extra Long Twist Drill Bits Cover
sourcing map HSS(High Speed Steel) Extra Long Twist Drill Bits, 4mm Drill Diameter 160mm Length for Hardened Metal Woodwork Plastic Aluminum Alloy 2 Pcs

The sourcing map Twist Drill Bits are designed for precision and durability. With a diameter of 4mm and a length of 160mm, these high-speed steel bits are ideal for drilling through non-ferrous metals, hard plastics, and more. Their twisted design enhances cutting accuracy, ensuring the drill bit stays centred and reduces displacement during use. Additionally, the high strength and hardness of the material contribute to a longer drilling life, making these bits a reliable choice for both professional and DIY projects.

What We Like
High-speed steel construction
Improved cutting accuracy
Suitable for various materials
Longer drilling life
Works with multiple drill types
#TOP 3

sourcing map Extra Long Twist Drill Bits

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sourcing map Extra Long Twist Drill Bits Cover
sourcing map HSS(High Speed Steel) Extra Long Twist Drill Bits, 3mm Drill Diameter 160mm Length for Hardened Metal Woodwork Plastic Aluminum Alloy 2 Pcs

The sourcing map Twist Drill Bits are crafted from high-speed steel, ensuring a longer lifespan and greater durability. Their twisted design enhances cutting accuracy, allowing you to centre the tip for precise drilling. This feature also helps in removing debris more effectively, making your drilling process smoother. With a diameter of 3mm and a length of 160mm, these bits are perfect for working with non-ferrous metals and hard plastics, providing versatility for both professional and DIY applications.

What We Like
Durable high-speed steel construction
Improved cutting accuracy
Effective debris removal
Versatile for various materials
#TOP 4

sourcing map Extra Long Twist Drill Bits

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sourcing map Extra Long Twist Drill Bits Cover
sourcing map HSS(High Speed Steel) Extra Long Twist Drill Bits, 5mm Drill Diameter 200mm Length for Hardened Metal Woodwork Plastic aluminum alloy 2 Pcs

The sourcing map Twist Drill Bits feature a 5mm diameter and an impressive 200mm length, making them ideal for drilling through hardened metals, hard plastics, and aluminium alloys. Made from high-speed steel, these bits provide exceptional strength and longevity, ensuring they withstand rigorous use. The twisted design enhances cutting accuracy, reducing the risk of displacement while efficiently removing debris. Suitable for both professional and DIY applications, you can use them with various drilling equipment, such as electric hand drills and bench drills.

What We Like
High-speed steel construction
Twisted design for accuracy
Versatile for different materials
Long length for deep drilling
Suitable for various drill types
#TOP 5

sourcing map HSS Extra Long Twist Drill Bits

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6x200mm
sourcing map HSS Extra Long Twist Drill Bits Cover
sourcing map HSS(High Speed Steel) Extra Long Twist Drill Bits, 6mm Drill Diameter 200mm Length for Hardened Metal Woodwork Plastic Aluminum Alloy 2 Pcs

The sourcing map Twist Drill Bits are designed for precision and durability. Their high-speed steel construction ensures a longer drilling life, making them reliable for heavy use. With a twisted design, the drill bits improve cutting accuracy by centring the tip, reducing the risk of displacement during work. This feature also aids in faster removal of debris, enhancing your efficiency. Suitable for various materials, including non-ferrous metals and hard plastics, these bits are ideal for both professional and DIY projects.

What We Like
Durable high-speed steel material
Improved cutting accuracy
Efficient debris removal
Versatile for multiple materials
Suitable for various drilling equipment
#TOP 6

sourcing map HSS Extra Long 5mm Twist Drill Bits

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5x300mm
sourcing map HSS Extra Long 5mm Twist Drill Bits Cover
sourcing map HSS(High Speed Steel) Extra Long Twist Drill Bits, 5mm Drill Diameter 300mm Length for Hardened Metal Woodwork Plastic Aluminum Alloy 2 Pcs

The sourcing map HSS Drill Bits are crafted from high-speed steel, making them tough and durable for extended use. Their 5mm diameter and extra-long 300mm length allow you to reach deeper into materials like metal, wood, plastic, and aluminium alloys. The twisted design helps centre the drill tip for precise cutting, reducing slippage and improving accuracy. It also efficiently removes debris, keeping your work clean and smooth. These bits suit both professional and DIY users, fitting electric hand drills, bench drills, and other machine tools, offering versatility for various projects.

What We Like
Durable high-speed steel
Extra-long 300mm length
Improved cutting accuracy
Efficient debris removal
Suitable for multiple materials
#TOP 7

sourcing map HSS Extra Long 8mm Twist Drill Bits

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sourcing map HSS Extra Long 8mm Twist Drill Bits Cover
sourcing map HSS(High Speed Steel) Extra Long Twist Drill Bits, 8mm Drill Diameter 200mm Length for Hardened Metal Woodwork Plastic Aluminum Alloy 2 Pcs

The sourcing map HSS Drill Bits are made from high-speed steel, which makes them harder and extends their drilling life, so you get reliable performance over time. Their 8mm diameter and 200mm length make them perfect for working on materials like hardened metal, wood, plastic, and aluminium alloys. The twisted design centres the tip for better cutting accuracy and helps you avoid drill displacement. Plus, it quickly clears debris, making your work smoother and more efficient. These bits are suitable for both professional and DIY projects, especially with non-ferrous metals and hard plastics.

What We Like
Durable high-speed steel
Accurate twisted tip design
Suitable for various materials
Extra-long 200mm length
#TOP 8

sourcing map 3mm Extra Long Drill Bits

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sourcing map 3mm Extra Long Drill Bits Cover
sourcing map HSS(High Speed Steel) Extra Long Twist Drill Bits, 3mm Drill Diameter 200mm Length for Hardened Metal Woodwork Plastic Aluminum Alloy 2 Pcs

The sourcing map Drill Bits are designed for precision and durability. With a diameter of 3mm and a length of 200mm, these high-speed steel bits are perfect for drilling into hardened metals and plastics. Their twisted design enhances cutting accuracy and reduces the risk of bit displacement, allowing you to work more efficiently. Moreover, they can easily remove debris, making your drilling tasks smoother and quicker. Whether you're a professional or a DIY enthusiast, these drill bits are a reliable choice for various applications.

What We Like
High-speed steel construction
Enhanced cutting accuracy
Suitable for various materials
Efficient debris removal
#TOP 9

sourcing map HSS Extra Long Drill Bits

a22022300ux0037
sourcing map HSS Extra Long Drill Bits Cover
sourcing map HSS(High Speed Steel) Extra Long Twist Drill Bits, 4mm Drill Diameter 160mm Length for Hardened Metal Woodwork Plastic Aluminum Alloy 6 Pcs

The sourcing map Extra Long Bits are designed for precision drilling in various materials, including non-ferrous metals and hard plastics. With a diameter of 4mm and a length of 160mm, these high-speed steel drill bits ensure durability and longer drilling life. Their twisted design enhances cutting accuracy, allowing you to centre the tip effectively while reducing debris build-up. Ideal for both professional and DIY projects, these bits are compatible with a range of drilling equipment, ensuring versatility in your tasks.

What We Like
Durable high-speed steel construction
Improved cutting accuracy
Versatile for various materials
Compatible with multiple drill types
Longer drilling life
Buying Guide Image

Frequently Asked Questions (FAQs)

1. What are long drill bits called?

A unibit (often called a step drill bit) is a roughly conical bit with a stairstep profile. Due to its design, a single bit can be used for drilling a wide range of hole sizes. Some bits come to a point and are thus self-starting. The larger-size bits have blunt tips and are used for hole enlarging.

2. What is the largest drill bit you can buy?

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.

3. What drill bit can drill multiple sized holes in metal?

A step drill bit for metal allows you to drill holes in a variety of diameters, and some will drill through metal up to 3/8 in. thick. The downside? Step bits are more expensive than regular bits.

Editor's Notes

During our extra long drill bit for metal research, we found 236 extra long drill bit for metal products and shortlisted 9 quality products. We collected and analyzed 5,599 customer reviews through our big data system to write the extra long drill bits for metal list. We found that most customers choose extra long drill bits for metal with an average price of £7.97.

The extra long drill bits for metal are available for purchase. We have researched hundreds of brands and picked the top brands of extra long drill bits for metal, including sourcing map and more.

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.