Best drill bits for hardened steel

The DEWALT Drill Bit Set (DWA1184) is a versatile 14-piece collection designed for drilling in plastic, wood, and metal. Its 135-degree split point tip design enhances precision by minimizing the likelihood of walking during use, ensuring cleaner holes. Constructed from high-speed steel, these bits are built for durability, while the tapered web design increases strength and resistance to breakage. Additionally, the black and gold coating not only contributes to the set's aesthetic appeal but also protects against rust and wear, prolonging the lifespan of the bits. The set features a 3-flats shank design that effectively reduces spin-out in the chuck, providing a secure grip during operation. Size markings on the drill bit shank enable quick identification of sizes, which is a practical feature for users who frequently switch between bits. Overall, this drill bit set is an excellent choice for both professional and DIY projects, offering a combination of durability, precision, and ease of use.

The toolant Cobalt Drill Bit Set for Metal and Steel is a comprehensive 21-piece set designed for professional and heavy-duty applications. Each bit is coated with Titanium Aluminum Nitride (TiAlN), which enhances durability and heat resistance, making it ideal for drilling through hardened metals and stainless steel. The bullet point tip design ensures precision and minimizes wandering, allowing for accurate drilling in various materials. This set includes a wide range of sizes, from 1/16" to 1/2", catering to diverse drilling needs. The cobalt construction of the drill bits provides exceptional toughness and longevity, making them suitable for rigorous tasks. The set's performance is further bolstered by the TiAlN coating, which increases surface hardness and helps maintain sharpness over time. Additionally, the 90-day warranty offers peace of mind for users, ensuring satisfaction with the product. Overall, this drill bit set is engineered for efficiency and reliability, making it a valuable addition to any toolbox.

The DEWALT Titanium Nitride Coated Drill Bit Set (DW1361) is a comprehensive 21-piece collection designed for durability and precision in drilling tasks. The set features a Titanium Nitride coating that enhances the bit's lifespan, allowing for extended use without significant wear. The Pilot Point design ensures that the bits start on contact, creating cleaner holes and minimizing the risk of walking during drilling. The set includes various sizes ranging from 1/16-inch to 1/2-inch, making it versatile for different applications. The bits are housed in a sturdy plastic tough case, ensuring easy organization and portability. The drill bits are engineered with a no-spin shank design, which prevents slippage in the chuck, providing a secure grip during operation. Additionally, the tapered web design contributes to greater durability, reducing the likelihood of breakage under pressure. This set is suitable for both professional contractors and DIY enthusiasts, as it covers a wide range of drilling needs with high-quality materials and construction.

The BOSCH CO14B 14-Piece Assorted Set is a comprehensive collection of cobalt M42 metal drill bits designed for rigorous drilling applications in tough materials such as stainless steel, cast iron, titanium, and light-gauge metal. The bits feature a three-flat shank design that ensures a secure grip in the drill chuck, minimizing slippage during use. The set includes a variety of sizes, making it versatile for different drilling tasks, and comes with a sturdy case for easy storage and transport. The enhanced M42 alloy material contains 8% cobalt, which significantly increases durability and extends the lifespan of the bits compared to standard drill bits. These high-heat resistant bits are engineered to withstand elevated temperatures, making them ideal for heavy-duty applications. The thick web-helix design contributes to stability and reduces the risk of breakage, while the surface-hardened tip allows for efficient penetration into abrasive materials. This set is an excellent choice for professionals and DIY enthusiasts seeking reliable and long-lasting drill bits.

The Makita B-65399 Impact Gold 14 Pc. Titanium Drill Bit Set is designed for durability and efficiency, featuring titanium nitride (TiN) coating that enhances the lifespan of the bits by 2.5 times compared to traditional non-coated alternatives. This set includes a variety of drill bits optimized for use with 1/4 inch hex impact drivers, making it a versatile choice for various materials including ferrous metal, wood, plastic, non-ferrous metal, cast iron, and stainless steel. The 135-degree split point geometry aids in faster penetration and minimizes walking, which is beneficial for precision drilling. Additionally, the set’s impact rating ensures that the bits can withstand the high torque generated by impact drivers, making them suitable for heavy-duty applications. This combination of features makes the Makita B-65399 ideal for both professional contractors and DIY enthusiasts looking for reliable performance. The variety of bits included in the set allows users to tackle a wide range of projects without the need for multiple tools.