Best Drill Bit For Thick Steel (2024 Updated)

The GMTOOLS 29Pcs Cobalt Drill Bits Set is a high-quality and versatile drill bit kit that is designed to meet the needs of various drilling applications. This set includes 29 pieces of drill bits ranging in size from 1/16" to 1/2", making it suitable for use on a wide range of materials including hardened metal, cast iron, stainless steel, plastic, and wood.

These drill bits feature a precision grinding process that results in a clean surface and high grinding accuracy. They also have a universal round drill shank that makes them widely applicable to tool holding systems and tightly clamped.

One of the key features of these drill bits is the 135-degree split point and twist design. The 135-degree fast cutting point is automatically centered and penetrates quickly with less pressure, reducing walking and providing a fully ground drill bit with a sharp and durable cutting edge. The twist design also helps to clear chips faster, making drilling more efficient.

The GMTOOLS 29Pcs Cobalt Drill Bits Set is made from enhanced M35 alloy material, which contains 5% cobalt alloy steel. This alloy steel increases wear resistance and durability, making these drill bits ideal for heavy-duty use. The industry-grade 6542 high-speed steel drill bit set is also harder than the 4241 HSS used in other similar drill bit sets.

This drill bit set comes in a metal indexed storage case, making it easy to store and organize. The case also protects the drill bits from damage and ensures that they are always ready for use.

GMTOOLS is committed to providing high-quality products and excellent customer service. If for any reason you are not satisfied with your purchase, they offer a 30-day money-back guarantee and a 100% satisfaction guarantee for risk-free shopping.

Overall, the GMTOOLS 29Pcs Cobalt Drill Bits Set is a reliable, durable, and versatile drill bit kit that is perfect for both professional and DIY use. Whether you need to drill through hardened metal, cast iron, stainless steel, plastic, or wood, this drill bit set has you covered.

The Lichamp 21PCS HSS Cobalt Drill Bits Set is a high-quality tool designed to provide efficient drilling experience for users. It features a unique 3X flute patent design that clears chips and particles faster, making it easier and faster to drill holes in hard metals, hardened stainless steel, and cast iron.

The drill bits are made from industrial grade M35 high-speed steel with 5% cobalt, which provides hardness for wear resistance and makes them withstand a maximum temperature of 1100 degreeF. This means that users can rely on the drill bits to last longer and deliver quality results for a long time.

The Lichamp 21PCS HSS Cobalt Drill Bits Set is ideal for drilling in heavy-duty tough metal, including hard abrasive alloy metal, hardened stainless steel, or cast iron. This makes it a versatile tool that can be used in various applications.

The drill bits come with a 135-degree split point tip and twist design that increases cutting speed and ensures self-centering while preventing skating starts or walking. This means that users can expect smooth and accurate drilling results every time they use the Lichamp 21PCS HSS Cobalt Drill Bits Set.

The set includes a metal index case with a size chart for easy bit access and identification. It includes drill bit sizes ranging from 1/16-inch to 3/8-inch in 1/64-inch increments. This makes it easy for users to select the right bit size for their drilling needs.

Overall, the Lichamp 21PCS HSS Cobalt Drill Bits Set is a reliable and efficient tool that is ideal for drilling in heavy-duty tough metal, including hard abrasive alloy metal, hardened stainless steel, or cast iron. It is made from high-quality materials that ensure longevity and quality drilling results. The set comes with a metal index case that makes it easy to access and identify the right bit size for the job.

The Cobalt Drill Bits for Metal and Steel – 13 Piece Set in SAE Sizes (1/16" – 1/4") M35 Fully Grounded 5% Cobalt – Plastic Storage Case Included is a must-have for any DIY enthusiast, handyman, or professional alike. The set includes 13 cobalt drill bits in imperial sizes ranging from 1/16" to 1/4". These drill bits are made from M35 steel and contain 5% cobalt, making them perfect for drilling through hard materials such as stainless steel, hardened steel, cast iron, bronze, titanium, and more.

The fully grounded 135° split point design of the drill bits ensures precision drilling diameter and makes it easier to drill repeated holes in harder materials. The bits are made to last and are incredibly durable, thanks to their sturdy construction. The set comes with a tough and durable plastic storage case that keeps your cobalt drill bits neat, organized, and safe.

The cobalt drill bits are the perfect choice for drilling through metal and other hard materials. They are ideal for use in a wide range of applications, including automotive repairs, metalworking, woodworking, and more. The bits are designed to last and are made to withstand the toughest conditions, ensuring that they will be a reliable tool for years to come.

At Owl Tools, a USA-based company, customer satisfaction is our top priority. We try our best to ensure that each product is in perfect condition before it is shipped to you. However, if you are not completely satisfied with your purchase, please contact us for a full refund or replacement. We stand behind our products and are committed to providing our customers with the best possible service.

In conclusion, the Cobalt Drill Bits for Metal and Steel – 13 Piece Set in SAE Sizes (1/16" – 1/4") M35 Fully Grounded 5% Cobalt – Plastic Storage Case Included is a high-quality set of drill bits that are perfect for drilling through hard materials. The set includes 13 cobalt drill bits in a range of sizes, all of which are made from M35 steel and contain 5% cobalt. The fully grounded 135° split point design ensures precision drilling diameter, and the tough and durable plastic storage case keeps your drill bits safe and organized. With a lifetime guarantee, you can rest assured that you are making a wise investment in a tool that will serve you well for years to come.

The OXMUL M35 Step Drill Bit for Metal is an industrial-grade tool that offers extra-heavy duty+ performance for drilling into a wide range of materials, including stainless steel, hard steel, mild metal, aluminum, wood, PVC, and copper. With its M35 cobalt steel construction, this drill bit can drill 8X longer life and 3X faster than standard drill bits, making it an ideal choice for those looking to cut more holes in metal sheets.

One of the key features of the OXMUL M35 Step Drill Bit is its 12-step design, which includes sizes ranging from 3/16" to 7/8". This allows users to easily switch between different hole sizes without having to change drill bits, saving time and effort. Additionally, the 2-spiral-flute design of the bit helps to clear chips faster, allowing for smoother and more efficient drilling.

To ensure optimal performance, it is recommended that users pour cutting fluid during work to prolong the life of the bit. However, water-cooling should be avoided as it can lead to rusting. The 3/8" tri-flatted shank of the bit fits securely into power tool chucks, eliminating slip and providing greater control during drilling.

Perhaps the most impressive feature of the OXMUL M35 Step Drill Bit is its ability to drill through thick stainless steel plates with ease. In fact, this drill bit can successfully drill more than 35 holes into a 1/5" thick stainless steel plate like a knife through butter. This makes it an ideal choice for those working in industries such as construction, automotive, and manufacturing.

Overall, the OXMUL M35 Step Drill Bit for Metal is a reliable and efficient tool that offers extra-heavy duty+ performance for drilling into a wide range of materials. Its M35 cobalt steel construction, 12-step design, and 2-spiral-flute design make it an ideal choice for those looking to cut more holes in metal sheets, while its 3/8" tri-flatted shank ensures a secure fit into power tool chucks. Whether you're a professional or a DIY enthusiast, the OXMUL M35 Step Drill Bit is a must-have tool for any metalworking project.

The Fisch FSA-367208 16 Piece Black Shark Forstner Drill Bit Set is a premium drilling tool set that comes in a custom wooden box. The set includes drill bits ranging in size from 1/4 inch up to 2-1/8 inch, and is forged from high-speed steel in Austria.

The set is perfect for use with power tools on both softwoods and hardwoods. The bits are designed with a small center point, 2 peripheral cutting edges, 2 lifters, and a reduced cylindrical shank. The cylindrical shank also has 3 clamping surfaces, which makes it easy to use with a drill chuck.

Each bit in the set is made of high-quality materials, ensuring that they are strong and durable. They are designed to drill clean and precise holes, making them ideal for woodworking projects.

The set comes in a custom wooden box that is both practical and stylish. The box is designed to keep the bits organized and protected when not in use. It is perfect for those who want to keep their tools organized and easily accessible.

Overall, the Fisch FSA-367208 16 Piece Black Shark Forstner Drill Bit Set is a high-quality and reliable set of drill bits that is perfect for woodworking projects. The set includes a wide range of sizes, making it suitable for a variety of projects. It is also made of high-quality materials and comes in a custom wooden box, making it an excellent investment for any woodworker.

The 1/4-Inch Cobalt Steel M35 Jobber Length Twist Drill Bits for Hard Metal, Stainless Steel, Pack of 12, is a top-quality product designed to offer strong, durable performance, particularly when working with hard metals, including stainless steel. These drill bits are made from high-speed steel and 5% cobalt, which enhances their heat resistance and increases their red hardness. The result is a product that can withstand high temperatures, making it ideal for use in challenging environments.

The jobber length of the drill bits is 1/4-inch cut diameter, 2-3/4-inch flute length, and 4-inch overall length, with a 135-degree split point and 3-flat shank. These features make the bits suitable for drilling through a range of materials, including hard metals, stainless steel, and iron. The drill bits are also versatile, making them suitable for use in various applications, including drilling in wood, plastic, and other materials.

One of the most significant advantages of these cobalt steel drill bits is their uniform hardness throughout the entire material. This property enables the bits to be repeatedly sharpened without damaging the cutting edge, allowing them to drill more than typical high-speed steel drill bits. This property makes them an excellent choice for professionals who frequently use drill bits.

In addition to their durability and hardness, the 1/4-Inch Cobalt Steel M35 Jobber Length Twist Drill Bits come in a convenient pack of 12, making them ideal for use in bulk drilling applications. The set also comes in a durable case, ensuring the bits are protected and easy to access when needed.

In conclusion, the 1/4-Inch Cobalt Steel M35 Jobber Length Twist Drill Bits for Hard Metal, Stainless Steel, Pack of 12, is an exceptional product that offers top-quality performance, durability, and versatility. The bits are made from high-speed steel and 5% cobalt, making them highly resistant to heat, and they can be repeatedly sharpened without losing their cutting edge. This drill bit set is an excellent option for professionals who need a reliable product for drilling through hard metals, including stainless steel.

The KSEIBI Step Drill Bit Set is a comprehensive kit consisting of five pieces of high-speed steel black oxide M2 multiple hole drill attachments. These attachments come in 50 different sizes ranging from 1/8-1-3/8 inch SAE standard drill attachment sizes.

The HSS Double-Fluted Step bit kit is designed to provide faster cutting and drilling than single flute bits. The easy-to-read step markings and targets save time when drilling holes, making it a perfect fit for electrical, plumbing, and HVAC contractors.

These drill attachments are capable of drilling clean, accurate large holes in various materials, including hard sheet metal, ducts, steel, stainless steel, copper, brass, aluminum, plastic, plexiglass, wood, firewood, veneers, vinyl siding, acrylic, plasterboard, PVC pipe, fiberglass, and cast iron.

The M2 high-speed steel material and black coating ensure extreme durability, ensuring that these drill attachments stay new and shiny for years to come. The different sized shanks ensure compatibility with 3-Flat Hex Shank, which prevents the bit from slipping in the chuck while drilling holes of 1/4, 3/8, and 1/2-inch chuck size.

The step drill bit can be used on electrical drill, cordless drill, or high impact drill press machine, making it versatile and easy to use. The kit comes with a durable ABS plastic organizer that provides easy and safe storage in your toolbox.

The dual-flute design provides greater speed and control and is optimized for cordless drills driver running at high speed, making it perfect for professionals who need efficient and reliable tools for their work.

In summary, the KSEIBI Step Drill Bit Set is a comprehensive and versatile kit that provides faster cutting and drilling than single flute bits. The durable and high-quality materials ensure that these drill attachments stay new and shiny for years to come, making it a perfect fit for professionals who need reliable tools for their work.

The Drill Hog Silver & Deming Drill Bit Set is an exceptional addition to any tool collection. Made from Hi-Molybdenum M7 Steel, this set is designed to last and provide consistent results. The set features drill bits ranging in size from 9/16" to 1", each with a 1/2" cut down shank.

One of the standout features of this drill bit set is the 135-degree split point design. This design helps to prevent "walking" when starting a hole, which can be a common issue with other drill bits. The split point allows for a precise and accurate start to the hole, saving time and reducing frustration.

Another great feature of the Drill Hog Silver & Deming Drill Bit Set is the 3 flat sides on the shank. These flat sides prevent the drill bit from spinning in the chuck, further ensuring accuracy and preventing damage to the chuck. This feature also makes it easier to tighten and loosen the bit.

The Drill Hog Silver & Deming Drill Bit Set comes with a lifetime warranty, which speaks to the quality and durability of the product. This warranty provides peace of mind and ensures that the set can be used for years to come.

In summary, the Drill Hog Silver & Deming Drill Bit Set is a must-have for anyone who needs a reliable and high-quality drill bit set. The Hi-Molybdenum M7 Steel construction, split point design, and 3 flat sides on the shank all work together to provide accurate and consistent results. With a lifetime warranty, this set is a smart investment that will provide years of use.

The TOOLANT Four Spiral Flute Cobalt Step Drill Bit Set(Pro Max) is a highly efficient and versatile tool that is perfect for cutting through a variety of materials, including metal, stainless steel, aluminum, wood, and plastic. The set includes three bits with a total of 34 step sizes, ranging from 1/8" to 7/8", allowing users to drill holes of different sizes with ease.

One of the key features that sets this drill bit set apart from others is its four spiral flute design. This design ensures faster and smoother cutting, allowing swarf to escape easily. Additionally, the TiAlN coating on the bits provides a surface hardness of 89HRC, enabling users to cut through harder materials with ease and achieve higher cutting speeds.

The TOOLANT Four Spiral Flute Cobalt Step Drill Bit Set(Pro Max) is made from M35 cobalt HSS, which makes it highly durable and suitable for use in a variety of different applications. This material is perfect for cutting through metal sheets, stainless steel, aluminum sheets, wood, plastic, and copper, among other materials.

Furthermore, this drill bit set comes with a 90-day warranty, which ensures customer satisfaction. If for any reason a user is not fully satisfied with the product, they can contact the manufacturer for a 100% refund or replacement.

The TOOLANT Four Spiral Flute Cobalt Step Drill Bit Set(Pro Max) is designed with a 1/4" hex shank, which makes it compatible with most impact drivers and drills. This feature allows users to easily switch between different drill bits, making the drilling process more efficient and convenient.

In summary, the TOOLANT Four Spiral Flute Cobalt Step Drill Bit Set(Pro Max) is an excellent tool for anyone looking for a versatile and efficient drill bit set. Its four spiral flute design, TiAlN coating, and M35 cobalt HSS material make it highly durable and suitable for use in a variety of different applications. Additionally, its 90-day warranty provides users with peace of mind and ensures customer satisfaction.

The Yougfin Cobalt Drill Bits are specifically designed for hard metals and stainless steel, making them ideal for sheet metal working and cutting non-ferrous metals, plastic, and wood boards. These drill bits are made from M35 high speed steel with cobalt, which adds to their durability and makes them resistant to friction and heat.

The dual flutes of the Yougfin jobber twist bits are rotary cutting tools that have two cutting edges and two grooves formed in the body to provide cutting lips, allowing the removal of chips and allowing coolant or cutting fluid to reach the cutting action. This feature makes the drill bits highly efficient and easy to use.

The 135° split point is another unique feature of these drill bits. With a small point angle of 135°, these bits require less pressure when centering in the material. The point starts drilling at contact, reducing friction, pressure, and heat. The larger the point angle, the higher the contact pressure, and the centering in the material requires more pressure. This makes the Yougfin jobber drill bits highly efficient and easy to use.

The Yougfin Cobalt Drill Bits set comes with a combined 21 sizes ranging from 1/16" to 3/8". This assortment of sizes is indicated in twist drills and is suitable for various applications. The drill bits are easy to use, and their size range makes them versatile and ideal for a wide range of applications.

Please note that it is important to keep the bit perpendicular to the material during operation to avoid breakage. If you have any questions about Yougfin products, please feel free to contact us. The Yougfin Cobalt Drill Bits set is an excellent choice for anyone looking for high-quality drill bits that are efficient, durable, and easy to use.