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 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.

The DEWALT Screwdriver Bit Set / Drill Bit Set, 100-Piece (DWA2FTS100) is quite comprehensive, offering a variety of bits for different tasks. The set is made from metal, which ensures durability, and includes a polished finish that adds to its longevity. The size range is quite varied, catering to a broad spectrum of drilling and screwdriving needs. This makes it suitable for both home improvement enthusiasts and professional tradesmen who require a versatile set for various applications.

The bits are organized in a connectable storage system, which optimizes space and keeps the pieces easily accessible and secure with a clip latch. The clear lid allows for quick identification of contents without opening the case, adding to convenience. However, while the storage system is well-designed, it might be a bit bulky for those with limited storage space. Additionally, the set does not specify a particular coating, which could affect performance in more demanding tasks where coated bits would generally be more wear-resistant.

Another point to consider is the bit-bar design that allows for customizable placement, which could be advantageous or cumbersome based on individual preference. The DEWALT DWA2FTS100 is a reliable choice but may require additional consideration regarding storage and coating needs.