10 Best Drill Bit Sets 2025 in the United States

The BOSCH CO21B 21-piece drill bit set is designed mainly for metal drilling tasks, especially tough materials like stainless steel, cast iron, titanium, and aluminum. These bits are made from cobalt M42 alloy, which includes 8% cobalt, making them very durable and resistant to heat — this means they can last up to 10 times longer than standard bits and handle long drilling sessions without losing effectiveness. The set covers a good range of sizes from very small (1/16 inch) to larger holes (up to 1/2 inch), making it versatile for various projects.

One handy feature is the three-flat shank on bits 3/16 inch and larger, which helps the drill grip the bit better and avoid slipping. Similarly, the split point tips on bits 1/8 inch and bigger make starting holes easier with less chance of the bit skating around on the metal surface. The bits also have a 135-degree cutting angle and a hardened tip, which helps them penetrate tough materials more smoothly.

The bits come in a plastic case for organized storage and easy transport. Because these are cobalt bits designed for harder metals, they might be more than necessary or costlier if you're only drilling wood or softer materials. Also, while very durable, cobalt bits can be more brittle compared to some other types, so careful use is advised to avoid breaking. This Bosch set stands out as a strong choice for anyone who frequently drills metal and needs reliable, long-lasting bits that resist heat and wear. Its size variety and thoughtful design features make it user-friendly for both professionals and serious DIYers working with challenging materials.

The Milwaukee 48-89-4672 Impact Duty Titanium Drill Bit Set is a versatile 29-piece set designed for durability and efficiency. One of its major strengths is the titanium coating, which offers increased lifespan and reduced wear, making it a great choice for heavy-duty use. The thick tapered web adds to its strength, reducing the chance of breaks during tough jobs.

Additionally, the 1/4" hex shank ensures a secure fit and compatibility with most impact drivers, enhancing its usability across different tasks. The laser-etched sizes are a thoughtful feature, making it easier to identify the correct bit quickly, which is particularly useful on busy job sites or for those who value organization.

At 2.8 pounds, it might be slightly on the heavier side, which could be a drawback for those looking for more lightweight and portable options. Despite this minor issue, this set stands out for its durability and efficiency, making it a suitable choice for both professionals and serious DIY enthusiasts.

The DEWALT Titanium Nitride Coated Drill Bit Set (DW1361) is a fantastic option for both DIY enthusiasts and professionals looking for a reliable and versatile drill bit set. One of its standout features is the titanium nitride coating, which enhances durability and extends the life of the bits. This set includes 21 pieces, covering a size range from 1/16-inch to 1/2-inch, making it suitable for various projects involving metal, plastic, and wood. The pilot point design ensures clean holes right from the start, which can be a real time-saver during tasks that require precision.

Another strength of this set is its no-spin shank feature, which prevents the bits from slipping in the chuck, providing a better grip and reducing frustration during use. The tapered web design adds further durability, helping to minimize breakage even under heavy use.

While this set may not be the best choice for those seeking specialty bits or very specific sizes outside the provided range, it remains a solid option for general use. Additionally, while the plastic tough case is handy for organization, some users may prefer a more robust storage solution. In terms of price, it sits in the mid-range, which might not fit everyone's budget, especially if you're looking for a comprehensive set for heavy-duty or industrial use.