10 Best Metal Drill Bits 2026 in the United States

The BOSCH CO21B 21-Piece Drill Bit Set offers a solid choice for anyone needing reliable metal drilling tools. Made from Cobalt M42 alloy, these bits are designed for tough jobs involving stainless steel, cast iron, titanium, and other metals. The inclusion of 8% cobalt makes them much more durable and heat-resistant than standard bits, meaning they won’t wear out quickly under heavy use or high temperatures. This feature is especially useful if you frequently drill hard metals.

The 135-degree split point design helps the bits start drilling easily without slipping, eliminating the need for extra tools like a center punch. The thick web-helix (spiral) flute design adds stability and helps remove metal shavings efficiently, making drilling smoother. Another helpful feature is the three-flat shank on larger bits, which improves grip in the drill chuck to prevent slipping during use. The set covers a wide range of sizes from 1/16 inch up to 1/2 inch, making it versatile for various projects. It comes in a plastic case that keeps everything organized but isn’t the most rugged option for heavy workshop use.

These bits excel in durability and performance but might be overkill if you only need to drill softer materials like wood or plastic. The price tends to be higher compared to basic steel bits because of the cobalt content. If you often work with hard metals and want a long-lasting, high-quality set, this BOSCH kit is a dependable choice, whereas for occasional or light-duty drilling, a less expensive set might suffice.

The Milwaukee 48-89-9224 Step Bit 6-Piece Set offers a solid option for those needing step drill bits primarily for metals like aluminum, brass, copper, and steel, as well as plastics and wood. Made from alloy steel with a black oxide finish, these bits are designed to resist wear and corrosion, enhancing their durability. The black oxide coating also helps reduce friction and heat buildup during drilling, which is beneficial for clean and efficient cuts.

The set includes six common sizes (#1, 4, 6, 7, 8, 9) that cover a reasonable range of hole diameters, making it versatile for various projects. The straight shank and spiral flute design improve chip removal and overall drilling performance. The taper point style aids in easy bit positioning and prevents slipping, which is especially helpful for users less experienced with metal drilling. At 1.6 pounds total, the bits are easy to handle and control, contributing to better accuracy when working on thin sheet metals or other materials.

This set is a good fit for DIY enthusiasts, hobbyists, or professionals who want a reliable, easy-to-use step bit set for general metal and multi-material drilling without needing specialized, heavy-duty bits.

The Milwaukee 48-89-4680 18-Piece Shockwave Impact Duty Titanium Drill Bit Set is designed for those who require reliable and durable drill bits for heavy-duty tasks. One of its standout features is the titanium coating, which significantly reduces heat buildup during use. This means you can use the bits for extended periods with less risk of warping, making them suitable for various applications. The special parabolic flute design enhances chip clearance, allowing for a quicker and cooler drilling experience, which is a big plus for efficiency.

With an assortment of sizes included in the set, ranging from 1/16” to 3/8”, you’ll find a bit for almost any task. The hex shank type also makes it easy to switch out bits, ensuring compatibility with most drills. Plus, the included storage case is well-designed, featuring a slide lock system and individual compartments that keep your bits organized and protected during transport.

These bits are particularly effective for higher torque applications; however, they may not be the best choice for softer materials, as the titanium coating can sometimes lead to less effective drilling in those cases. Additionally, the price point may be higher than basic bit sets, which could be a consideration for casual DIY users or those on a tight budget.