10 Best Drill Bits For Metal 2025 in the United States

The Milwaukee 48-89-9224 Step Bit 6-Piece Set is designed for drilling metals like steel, aluminum, brass, and copper, making it a solid option for metalworking tasks. Made from durable alloy steel with a black oxide finish, these bits resist wear and corrosion, helping them last longer. The set includes six step bits with sizes #1, 4, 6, 7, 8, and 9, which cover a useful range of hole diameters.

These step bits feature a taper point and dual flute design, which helps with smooth drilling and efficient chip removal, reducing heat buildup during use. The straight shank fits most standard drills, and the bits are easy to handle, which is great if you’re not experienced with specialized tools. Step bits are generally best for drilling thin metal sheets rather than thick metal, so if you need to drill heavy or thick metal often, this might not be the perfect choice.

The black oxide coating provides good durability but may not perform as well as more advanced coatings like titanium nitride for very heavy-duty use. This set offers strong durability, ease of use, and a practical range of sizes, making it well suited for hobbyists or light to medium metal drilling projects.

The Drill America 29 Piece Cobalt Stepped Point Drill Bit Set is a solid choice for anyone needing to drill through metal and other tough materials like acrylic and brass. Made from cobalt, these bits are tougher and last longer than standard steel bits, especially when working with hard metals. The gold oxide finish helps reduce heat buildup, which means the bits stay sharper and cut more efficiently. The 135-degree split point is designed to start drilling quickly without wandering, making it easier to get precise holes.

The set includes a wide range of sizes from 1/16" up to 1/2", covering most common drilling needs in metalworking. The 3-flat shank design on larger bits prevents slipping in the drill chuck, although smaller bits have round shanks which might not grip as securely. One minor downside is that these bits are jobber length, which is standard but not ideal if you need extra-long bits for deeper holes. Also, since they are made in China, quality control might vary slightly, but Drill America has a good reputation.

This set comes in a convenient round case for organization and portability, making it useful for both hobbyists and professionals who often work with metal. For those who regularly drill various hole sizes in hard metals and want durable bits that stay sharp longer, this set is worth considering.

The Norseman 22903 drill bit set is designed mainly for metalworking, making it a good match for those needing reliable bits for sheet metal, hard steel, acrylic, and brass. The bits are made from hi-molybdenum steel, known for strength and durability when drilling through tough materials. Their gold oxide coating helps reduce heat buildup, extending the life of the bits compared to standard ones.

With a point angle of 135 degrees, these bits are self-centering and suited for precise drilling, which is especially helpful on metal surfaces. The 3-flat shank design helps the bits stay firmly in the drill chuck to prevent slipping. The set includes 29 sizes ranging from 1/16 inch up to 1/2 inch, covering a broad variety of hole sizes for different projects.

While the gold oxide coating improves durability, it is not as tough as some higher-end coatings like titanium nitride. These bits might not perform as well for very heavy-duty or high-speed industrial tasks where specialized bits are required. For most home and light professional metalworking needs, this set provides good value, durability, and precision with a comprehensive size selection.