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.

The BOSCH CO14B 14-Piece Assorted Set is a solid choice for anyone looking to tackle a range of drilling projects, particularly in tougher materials like stainless steel, cast iron, and titanium. One of the standout features is the M42 cobalt construction, which offers enhanced durability and heat resistance, making these bits last significantly longer than standard options. The inclusion of a three-flat shank design helps to prevent slipping, which is especially useful when drilling into hard surfaces. With sizes ranging from 1/16" to 1/2", this set caters to various drilling needs, allowing for versatility in both home and professional environments.

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.