10 Best Metal Drill Bits 2025 in the United States

The DEWALT 21-Piece Drill Bit Set (DWA1181) is a versatile choice for those needing to drill through a variety of materials such as metal, wood, plastic, PVC, and fiberglass. Its black oxide coating is a notable feature, providing resistance against corrosion and enhancing the longevity of the bits. The 135-degree split point design ensures that the bits start drilling on contact, reducing the chances of slipping on hard surfaces, which is particularly useful for precision work.

Additionally, the 31-degree helix and parabolic flute design improve chip ejection and reduce excessive drilling aggressiveness, making it easier to drill deeper holes without clogging or material buildup. However, while this set is well-rounded and durable, it may not be the best option for those who require specialized drill bits for very specific materials or high-precision industrial tasks.

For DIY enthusiasts and general-purpose drilling, this set offers excellent performance and durability.

The DEWALT Titanium Nitride Coated Drill Bit Set is a solid choice for anyone needing reliable drill bits for various materials, including metal, plastic, and wood. The set includes 21 pieces, ranging from 1/16-inch to 1/2-inch sizes, catering to a wide array of drilling tasks. One of its standout features is the Titanium Nitride coating, which enhances durability and extends the life of the bits, making them a great investment. The Pilot Point design allows for cleaner holes and starts on contact, reducing the chances of wandering, which can be particularly helpful for DIY enthusiasts and professionals alike.

Another advantage is the tapered web design, which provides extra strength and helps minimize breakage during use. This is especially beneficial for users who frequently drill into tougher materials. The no-spin shank is also a thoughtful feature that ensures better grip and easier handling.

There are a few considerations to keep in mind. While the set covers a range of sizes, it may not include all the very small sizes needed for specialized tasks. Additionally, the plastic case, while sturdy, may not be as durable as a metal one, which some users prefer for long-term storage. This drill bit set is well-suited for both home improvement projects and professional needs, offering a blend of quality and versatility that most users will find beneficial.

The BOSCH CO14B 14-Piece Assorted Set offers a robust solution for anyone looking to drill through tough metals like stainless steel, cast iron, and titanium. The standout feature here is the use of Cobalt M42 material, which is designed to provide exceptional durability and can withstand high temperatures—making these bits last up to 10 times longer compared to standard drill bits. This is particularly useful for frequent users or those working with harder metals, as it minimizes the need for frequent replacements.

The three-flat shank design enhances grip within the drill chuck, reducing slippage and providing better control during drilling. Additionally, the 135-degree cutting angle allows for efficient penetration in hard materials, while the thick web-helix design adds stability, making these bits suitable for tough applications.

While the set includes a comprehensive range of sizes (from 1/16” to 1/2”), some users may find that the variety might not cater to all specific drilling needs, particularly if they require very specialized sizes. Furthermore, as these bits are intended for heavy-duty use, they may not be the best choice for casual DIY projects where lighter materials like wood are more common. The bits are priced higher than standard drill bits, which might not appeal to casual users. However, for professionals or hobbyists who frequently work with metal, the investment in the BOSCH CO14B set could lead to better performance and longevity in their projects.