10 Best Drill Bit Sets 2026 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 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.

The DEWALT Drill Bit Set (DWA1184) is a 14-piece collection that offers significant versatility for tackling various materials including plastic, wood, and metal. One of its standout features is the 135-degree split point design, which helps prevent the bits from wandering off during drilling, making it user-friendly, especially for those who might not have the steadiest hands. The high-speed steel construction is a strong point as it ensures the bits are durable and can withstand heavy use, which is crucial for both DIY enthusiasts and professionals. The black and gold coating not only gives the bits a sleek appearance but also protects them from rust and wear, extending their lifespan. Additionally, the tapered web design reduces the chances of breakage, enhancing the set's reliability.

While the set is well-suited for a variety of materials, it may not be the best choice for very specialized applications, such as masonry or applications requiring particularly hard or abrasive materials. Some users have noted that the bits could be better suited for larger drilling tasks, as their size range might limit their effectiveness in more precise or delicate work. Despite the size markings on the shank for quick identification, a beginner might still find it a bit confusing when selecting the right size without some guidance.

This DEWALT drill bit set is ideal for those looking for a reliable and versatile option for general drilling tasks, making it a great choice for homeowners and casual DIYers. However, professionals or those requiring more specialized drill bits may want to consider additional options tailored to specific needs.