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.

The Milwaukee Shockwave Bit & Drill Bit Kit offers 60 pieces made from durable alloy steel, known for good strength and longevity. Its brushed finish helps reduce wear, and the bits are designed to last up to 50 times longer than many other impact bits, making them a solid choice if you want long-lasting tools. This kit includes a variety of drive types—Slotted, Torx, Hex, Phillips, and Square—covering many common fastening needs. The size range supports fasteners up to 0.25 inches, which suits most typical home and professional 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.