Drilling through metal isn’t a job for cheap bits. If you want clean, precise holes in steel, stainless, or hardened alloys, you need the right tools. Whether you’re working in a machine shop or a home garage, these top 5 drill bit sets for metal in 2025 deliver pro-grade performance, longevity, and value.
Top 5 Best Drill Bits for Metal in 2025
1. Drill America KFD 29J – Best All-Purpose Set for Metal
This 29-piece high-speed steel (HSS) set covers every size from 1/16″ to 1/2″ in 1/64″ increments. The bits feature a black and gold oxide finish for added corrosion resistance and durability. A 135° split point makes for easy starts without walking—no pilot hole needed.
- Jobber-length bits for versatility
- Self-centering tip = cleaner holes, faster starts
- Ideal for mild steel, aluminum, and general use
- Comes in a labeled plastic storage case
Best for: DIYers and pros who want a dependable, all-around set that works across multiple metal types.
2. Drill America ZMGC 29 JPC – Best Stepped-Cobalt Upgrade
Made of cobalt steel for added heat resistance, this 29-piece set is built to last through tough jobs. The gold oxide stepped point design helps reduce heat buildup, making it perfect for hardened steel, brass, and high-strength alloys.
- 135° split point = no walking, no pilot holes
- Stepped point increases cutting speed
- Round shanks on smaller bits, 3-flat shanks on larger sizes
- Gold oxide finish reduces friction and increases bit life
Best for: Heavy-duty users needing faster cuts and longer lifespan, especially on tough metals.
3. Toolant Titanium-Aluminum Nitride Set – Best Coated Cobalt for Precision
The Toolant 21-piece set uses M35 cobalt steel and a Titanium Aluminum Nitride (TiAlN) coating—harder than standard coatings—to boost surface hardness to 89 HRC.
- Bullet point tip for ultra-precise starts
- Ideal for stainless steel, hardened alloys, and high-temp work
- Advanced coating offers longer life and higher heat resistance
- Backed by a 90-day satisfaction guarantee
Best for: Metalworkers looking for pro-level coating tech for tight, clean cuts in hard materials.
4. Drill America DWD29JCO – Best ANSI-Rated Cobalt Set
Another Drill America favorite, the DWD29JCO set features M42 cobalt bits that last longer under stress and heat. It includes 29 jobber-length sizes (1/16″ to 1/2″) and is ANSI-compliant.
- Gold oxide coating acts as a built-in lubricant
- 135° split point = fast, accurate penetration
- Great for cast iron, stainless steel, and hardened metals
- Compact, organized case for easy access
Best for: Professionals who want cobalt strength in a quality-controlled, ANSI-rated package.
5. MACXCOIP M35 Cobalt Drill Bit Set – Best Value for Tough Jobs
This 29-piece set made from M35 cobalt steel is a go-to for metalworkers who want power and affordability. The precision twist design improves chip removal, while the 135° point tip minimizes walking and boosts accuracy.
- Handles stainless, cast iron, copper, and even wood or plastic
- Self-centering tips for accurate holes
- Strong resistance to heat and wear
- Cleanly drills through a wide range of materials
Best for: Budget-conscious users who still demand cobalt strength and long-term reliability.
Final Thoughts
Drilling through metal requires more than just horsepower—it demands precision tips, high heat resistance, and sharp edge retention. These five drill bit sets offer the durability and performance needed to tackle even the toughest metals:
Quick Picks:
- Most Versatile: Drill America KFD 29J
- Best for Hardened Metals: ZMGC 29 JPC Cobalt Set
- Best Coated Set: Toolant Titanium-Aluminum Nitride
- ANSI-Grade Pro Option: Drill America DWD29JCO
- Best Value Cobalt Set: MACXCOIP M35
