10 Best Metal Drill Bits 2025 in the United States

The Milwaukee 48-89-9224 Step Bit 6-Piece Set offers a solid option for those needing step drill bits primarily for metals like aluminum, brass, copper, and steel, as well as plastics and wood. Made from alloy steel with a black oxide finish, these bits are designed to resist wear and corrosion, enhancing their durability. The black oxide coating also helps reduce friction and heat buildup during drilling, which is beneficial for clean and efficient cuts.

The set includes six common sizes (#1, 4, 6, 7, 8, 9) that cover a reasonable range of hole diameters, making it versatile for various projects. The straight shank and spiral flute design improve chip removal and overall drilling performance. The taper point style aids in easy bit positioning and prevents slipping, which is especially helpful for users less experienced with metal drilling. At 1.6 pounds total, the bits are easy to handle and control, contributing to better accuracy when working on thin sheet metals or other materials.

This set is a good fit for DIY enthusiasts, hobbyists, or professionals who want a reliable, easy-to-use step bit set for general metal and multi-material drilling without needing specialized, heavy-duty bits.

The Milwaukee 29 Pc. Cobalt Red Helix Metal Drill Bit Set is designed for those who need reliable and durable drill bits for metalwork. Made from cobalt, these bits are tougher and last longer than standard high-speed steel bits, especially when drilling into hard metals. The 135-degree cutting angle is ideal for clean starts and precise drilling, reducing walking on the material. The black oxide finish adds some protection against rust but is less durable than some other coatings like titanium or black oxide with extra treatments.

With a straight shank and a red helix flute design, these bits efficiently remove metal chips, helping to keep the drill cool and the cut smooth. The set includes 29 sizes, which makes it versatile for different tasks, but it might be more than what a casual user needs.

This set suits hobbyists and professionals looking for a robust cobalt drill bit collection that handles metal well, though those seeking the most advanced coatings might want to compare other options.

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.