Search Results
Products are chosen independently by our editors. Purchases made through our links may earn us a commission.

5 Best Metalworking Drill Bit Sets 2025 in US

Updated
An all-around product reviewer with a diverse skill set with experience across categories like tech and home goods.
Updated
#1 | Winner
DEWALT DWA1240

Main Features

  • 14-piece cobalt drill bit set
  • Pilot point tip for clean starts
  • Heat-resistant cobalt alloy construction
  • Includes tough storage case
  • Engineered for hard metals

Product Overview

The DEWALT DWA1240 Cobalt Drill Bit Set is designed for professionals and serious DIYers who frequently work with hard metals. Each bit is constructed from industrial-grade cobalt alloy, offering exceptional durability and heat resistance.

The pilot point tip design ensures accurate starts and minimizes bit walking, making it easier to achieve clean, precise holes every time.This 14-piece set covers a wide range of sizes, making it suitable for various metalworking applications.

The included tough case keeps the bits organized and protected, ensuring longevity and easy access. Whether you're drilling into stainless steel, cast iron, or other hard metals, this set delivers reliable performance and extended bit life.

PROS
  • Excellent for hard metals
  • Long-lasting durability
  • Reduces bit walking
  • Organized storage case
CONS
  • Higher price point
  • Limited to 14 sizes

Product Specifications

  • Material Cobalt Alloy Steel
  • Number of Pieces 14
  • Sizes 1/16" to 3/8"
  • Case Included Yes
  • Tip Style Pilot Point

Main Features

  • 29-piece titanium nitride coated set
  • 135-degree split point for accuracy
  • Size index for easy selection
  • Durable storage case
  • Ideal for metal drilling

Product Overview

The IRWIN 3018002 Titanium Nitride Coated Drill Bit Set is a comprehensive solution for those who need a broad selection of drill bit sizes for metalworking. The titanium nitride coating increases the hardness of each bit, providing greater wear resistance and longer life compared to standard high-speed steel bits.

This 29-piece set includes sizes from 1/16-inch to 1/2-inch in 1/64-inch increments, making it ideal for precision work. The included case features a size index for quick identification and organization.

The 135-degree split point design reduces walking and allows for faster, more accurate drilling, especially in metal applications.

PROS
  • Wide range of sizes
  • Long-lasting coating
  • Reduces bit walking
  • Easy organization
CONS
  • Coating may wear off with heavy use
  • Not as durable as cobalt for hardest metals

Product Specifications

  • Material High-Speed Steel with Titanium Nitride Coating
  • Number of Pieces 29
  • Sizes 1/16" to 1/2" (by 1/64" increments)
  • Case Included Yes
  • Tip Style Split Point

Main Features

  • 21-piece M42 cobalt alloy set
  • Split point tip for accuracy
  • Heat and wear resistant
  • Compact storage case
  • Engineered for hard metals

Product Overview

The Bosch CO21 Cobalt Drill Bit Set is crafted for users who frequently drill into tough metals such as stainless steel and cast iron. Each bit is made from M42 cobalt alloy, which provides superior heat resistance and durability, ensuring a longer lifespan even under heavy use.

The 21-piece set covers a broad range of common sizes, and the split point tip design minimizes walking and allows for faster penetration. The included case is compact and sturdy, keeping your bits organized and protected.

This set is a reliable choice for both professionals and hobbyists tackling challenging metalworking projects.

PROS
  • Excellent for hard metals
  • Long bit life
  • Minimizes walking
  • Sturdy case
CONS
  • Higher cost
  • Not as many sizes as larger sets

Product Specifications

  • Material M42 Cobalt Alloy
  • Number of Pieces 21
  • Sizes 1/16" to 13/32"
  • Case Included Yes
  • Tip Style Split Point

Main Features

  • 14-piece black oxide coated set
  • Optimized for impact drivers
  • 135-degree split point tip
  • Corrosion-resistant finish
  • Durable storage case

Product Overview

Makita's B-65399 Impact Gold Drill Bit Set is designed for users who demand high performance from their tools. The black oxide coating enhances the durability of each bit, providing better resistance to corrosion and wear.

These bits are engineered to work with both standard drill drivers and impact drivers, making them suitable for a range of metalworking tasks.The 14-piece set includes the most commonly used sizes, and the 135-degree split point tip ensures quick starts and clean holes.

The included case is compact and rugged, perfect for jobsite use. This set is a solid choice for professionals who need reliable bits for frequent metal drilling.

PROS
  • Works with impact drivers
  • Corrosion resistant
  • Clean, accurate holes
  • Compact case
CONS
  • Limited number of sizes
  • Not as durable as cobalt for hardest metals

Product Specifications

  • Material High-Speed Steel with Black Oxide Coating
  • Number of Pieces 14
  • Sizes 1/16" to 1/2"
  • Case Included Yes
  • Tip Style Split Point

Main Features

  • 21-piece high-speed steel with cobalt set
  • 135-degree split point tip
  • Heat and wear resistant
  • Plastic storage case
  • Suitable for hard metals

Product Overview

The COMOWARE 21-Piece Cobalt Drill Bit Set is a budget-friendly option for those who need dependable bits for metalworking. Each bit is made from high-speed steel with a 5% cobalt blend, providing improved heat resistance and durability compared to standard HSS bits.

The set includes a variety of sizes, making it suitable for most metal drilling tasks.The 135-degree split point tip helps reduce walking and allows for faster, cleaner drilling. The included plastic case keeps the bits organized and easy to transport.

This set is ideal for DIYers and professionals seeking a cost-effective solution for drilling into metal, including stainless steel and cast iron.

PROS
  • Affordable price
  • Good heat resistance
  • Wide range of sizes
  • Organized storage
CONS
  • Plastic case less durable
  • Not as long-lasting as premium cobalt sets

Product Specifications

  • Material High-Speed Steel with 5% Cobalt
  • Number of Pieces 21
  • Sizes 1/16" to 13/32"
  • Case Included Yes
  • Tip Style Split Point

Selecting the right metalworking drill bit set can make a significant difference in the quality and efficiency of your projects. With a wide array of options available, it’s important to understand what sets the best drill bit sets apart and how to identify the right one for your needs.

Begin by considering the material composition of the drill bits. High-speed steel (HSS) is a common choice for general metal drilling, offering a good balance of durability and affordability. For tougher metals such as stainless steel or hardened alloys, cobalt steel bits are preferred due to their increased heat resistance and longevity. Titanium-coated bits provide an extra layer of hardness and reduce friction, which can extend the life of the bit, though the coating can wear off over time. For the most demanding applications, carbide-tipped bits offer exceptional hardness and maintain their edge longer, but they are more brittle and expensive.

The geometry of the drill bit is another crucial factor. Look for bits with split-point tips, which help to reduce walking and allow for more precise starts. The angle of the tip, typically 118 or 135 degrees, affects how the bit engages with the metal. A 135-degree split point is especially effective for harder metals, as it requires less force to penetrate the surface.

Pay attention to the range of sizes included in the set. A comprehensive set should cover the most commonly used diameters, typically ranging from 1/16 inch up to 1/2 inch in increments. Some sets also include lettered or numbered bits for more specialized tasks. Consider your typical project requirements and ensure the set you choose aligns with those needs.

The quality of the case or storage solution is often overlooked but can impact the longevity of your bits. A sturdy, well-organized case keeps bits protected from damage and makes it easier to quickly find the size you need. Some premium sets include indexed cases that clearly label each bit size, reducing the risk of misplacement.

Brand reputation and user reviews can provide valuable insight into the real-world performance of a drill bit set. Established manufacturers often offer better quality control and customer support. Reading reviews from other metalworkers can highlight strengths and weaknesses that may not be immediately apparent from product descriptions.

Finally, consider the price-to-value ratio. While it may be tempting to opt for the least expensive set, investing in higher-quality bits can save money in the long run by reducing the frequency of replacements and improving the quality of your work. Look for sets that offer a good balance between cost, durability, and performance.

By focusing on material, tip design, size range, storage, and brand reputation, you can confidently select a metalworking drill bit set that will serve you well across a wide range of projects. Taking the time to research and invest in the right set will pay off in smoother drilling, cleaner holes, and longer-lasting tools.