Best Cobalt Extra Long Drill Bits of 2025
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Cobalt Extra Long Drill Bits are high-quality drill bits designed for drilling through tough materials such as stainless steel, cast iron, and titanium. With their extra-long length, they are ideal for drilling deep holes, and their cobalt construction ensures durability and longevity. These drill bits are suitable for both professional and DIY use, and they come in a variety of sizes to accommodate different drilling needs. If you are looking for reliable and efficient drill bits, Cobalt Extra Long Drill Bits are an excellent choice.
At a Glance: Our Top Picks
#TOP 1
9.8
#TOP 2
9.7
#TOP 3
9.5
Top 3 Cobalt Extra Long Drill Bits
sourcing map M35 Extra Long Drill Bit
The sourcing map Drill Bit features a 4.5mm diameter and a length of 160mm, making it ideal for various drilling tasks. Made from M35 high-speed steel, it offers exceptional strength and hardness, ensuring efficient drilling through hard materials like cast iron and hard plastics. The gold oxide surface treatment enhances its durability and corrosion resistance, providing a longer lifespan. By using this drill bit properly, you can maintain its performance for a significantly extended period, making it a valuable tool for both professionals and DIY enthusiasts.
BAFFII 160mm Extra Long HSS Drill Bit
The BAFFII Extra Long Drill Bit features high cutting edge strength and fast cutting speed, making it ideal for efficient drilling. You will appreciate how the increased speed reduces heat build-up, prolonging the life of the bit. Its straight shank design prevents slipping, allowing you to start drilling easily. With a total length of approximately 160mm, this drill bit is suitable for a variety of materials such as wood, aluminium, and plastic, ensuring versatility for your projects.
HHIP M35 5% Cobalt Extra Long Tool Bit
The HHIP Cobalt Tool Bit is designed with a size of 5/16 x 6 inches, making it ideal for various tasks. The M35 5% cobalt construction ensures superior performance, particularly in high heat conditions. This tool bit excels in heavy cuts, allowing you to work efficiently with hard materials. With its extra length, you gain better reach and leverage, making it easier to handle challenging projects with precision and control.
Frequently Asked Questions (FAQs)
1. What is stronger than a cobalt drill bit?
Titanium drill bits are harder than cobalt, but because they are coated, they can't be sharpened. Cobalt drill bits are made of cobalt steel, and they can be sharpened. They are also highly resistant to heat and are very hard and abrasive.
2. Is titanium or cobalt better for drill bits?
Cobalt drill bits are more expensive, but offer longer life, and are more resistant to heat than titanium drill bits. Cobalt drill bits are also tougher and can drill holes in the hardest metals. Here is a quick comparison chart that explains the key differences between titanium vs cobalt drill bits.
3. Are cobalt drill bits worth it?
Cobalt drill bits are incredibly strong. They can be operated at much higher speeds than a standard HSS drill bit. The ability to withstand heat means that cobalt bits perform for long periods without cooling or the need for cutting fluid. They are most often used to cut through hardened and abrasive materials.
4. What is difference between M35 and M42 cobalt?
A: M35 and M42 refer to the percentage of cobalt in the cobalt steel alloy. M35 is five percent cobalt whereas M42 has eight percent.
During our cobalt extra long drill bit research, we found 36 cobalt extra long drill bit products and shortlisted 3 quality products. We collected and analyzed 6,208 customer reviews through our big data system to write the cobalt extra long drill bits list. We found that most customers choose cobalt extra long drill bits with an average price of £7.43.
The cobalt extra long drill bits are available for purchase. We have researched hundreds of brands and picked the top brands of cobalt extra long drill bits, including sourcing map, BAFFII, HHIP. The seller of top 1 product has received honest feedback from 20,011 consumers with an average rating of 4.8.
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.