Best High-Quality Drill Bits for Metal: Five Options for Different Jobs
The best high-quality drill bits for metal depend on the material, hole size, and how often you drill. For stainless steel and other tough metals, the BOSCH M42 cobalt set is a strong fit. The DEWALT titanium-coated set is better for mixed-material projects, while its 14-piece high-speed steel set offers versatile everyday drilling. For stepped holes, choose the EZARC step bit; for a broad range of fractional sizes, consider the Champion set.
| Product | Best For | Key Feature |
|---|---|---|
| BOSCH CO14B | Tough metals | M42 cobalt alloy |
| DEWALT DW1361 | Mixed materials | Titanium nitride coating |
| DEWALT DWA1184 | General-purpose drilling | 135-degree split point |
| EZARC M35 Step Bit | Stepped holes | Nine step sizes |
| Champion Brute Platinum | Many fractional sizes | 29-piece set |
BOSCH CO14B M42 Cobalt Drill Bit Set
This 14-piece set is best for buyers who regularly drill stainless steel or other demanding metals. Its M42 alloy contains 8% cobalt, and the bits have a surface-hardened tip designed to penetrate tough, abrasive materials. The listed applications include stainless steel, cast iron, titanium, light-gauge metal, and aluminum.
The jobber-length design and heat resistance make this set a relevant choice when drilling can generate substantial heat. BOSCH states that the cobalt alloy delivers up to 10 times the life of standard bits; that is a manufacturer claim, not a guarantee for every material or drilling setup.
Choose this if metal durability is more important than having a large number of bits. Limitation: The set has 14 pieces, so buyers needing a broader size range may prefer a larger assortment.
DEWALT DW1361 Titanium-Coated Bit Set
This 21-piece set is best for homeowners and DIY users who want drill bits for metal as well as wood and plastic. Its titanium nitride coating is intended to extend bit life, while the pilot-point design starts on contact for cleaner holes. The set also has no-spin shanks.
Compared with the BOSCH cobalt set, this DEWALT option emphasizes versatility across materials rather than a specific M42 cobalt construction for tough metal drilling. Its contact-start point may help when precise placement matters, but it does not replace choosing the correct bit size and drilling technique.
Choose this if one set needs to cover several common materials. Limitation: The listed features do not specify a cobalt alloy, so buyers focused on frequent stainless-steel drilling may prefer the BOSCH set.
DEWALT DWA1184 14-Piece Drill Bit Set
The DWA1184 is best for general-purpose users who need high-speed steel bits for plastic, wood, and metal. Its 135-degree split-point tip is designed to help reduce walking at the start of a hole. DEWALT also lists a tapered web design intended to improve durability and resistance to breakage.
With a three-flat shank, this set is another practical option for mixed workshop tasks. It is better suited to general drilling than to buyers specifically seeking a cobalt set for heat-intensive work in hard metals.
Choose this if you want a straightforward multipurpose set with a split point. Limitation: The listed features identify high-speed steel, not cobalt construction or a specialized metal coating.
EZARC M35 Cobalt Step Drill Bit
This EZARC bit is best for buyers who need multiple hole diameters from one bit rather than a conventional set of separate twist bits. It covers 1/4 to 3/4 inch through nine step sizes and has a 1/4-inch hex shank. The product is listed for metal, stainless steel, aluminum, and plastic.
The M35 cobalt high-speed steel construction is heat-treated, and the AlTiN coating is described as offering hardness and resistance to heat, wear, and corrosion. Its triple-flute C-profile is designed to improve stability and cutting smoothness.
Choose this if you need stepped holes within its stated size range. Limitation: It is a single step bit, not a collection of individual bits for every diameter.
Champion Brute Platinum 29-Piece Set
This set is best for users who want many fractional sizes, from 1/16 to 1/2 inch in 64ths. It uses HSS mechanics-length bits with a 135-degree split point and tapered web geometry. The reduced overall length is intended to add strength and rigidity, while flatted shanks are designed for fast chucking in keyless power tools.
Champion describes the XL28 design as able to flex when cobalt drills may chip or snap, and makes comparative claims about drilling speed and life. These are manufacturer claims; actual results depend on the material and working conditions.
Choose this if size selection and shorter mechanics-length bits are priorities. Limitation: The listing identifies HSS construction, not a cobalt alloy, so it may not be the first choice for buyers specifically seeking cobalt bits.
Buying Guide: How to Choose Metal Drill Bits
Which material is best for the metal you are drilling?
For repeated work in tough or abrasive metals, look for a set whose listed features specify cobalt alloy, such as the BOSCH M42 set or the EZARC M35 step bit. High-speed steel options can suit general-purpose projects across metal and other materials. Coatings such as titanium nitride or AlTiN are additional product features, but they do not make every bit suitable for every metal.
Do you need individual sizes or a step bit?
Choose a conventional set when you need separate bits in multiple diameters. The Champion set lists 29 fractional sizes, while the BOSCH and DEWALT sets offer different material and point-design priorities. A step bit is better when several hole diameters within one range are needed from a single bit; the EZARC model covers nine steps from 1/4 to 3/4 inch.
What features help with starting a hole?
A split-point tip can help reduce walking, according to the DEWALT DWA1184 and Champion listings. The DEWALT DW1361 pilot point is designed to start on contact. For cleaner placement, select the point style that matches your task and mark the hole location before drilling.
How should you compare durability claims?
Compare the stated material, coating, geometry, and intended applications rather than relying on a single performance claim. The BOSCH listing makes a lifespan comparison, and the Champion listing makes speed and durability comparisons. Treat these as manufacturer claims, because results can vary with the metal, drill setup, and use.
Frequently Asked Questions
Are cobalt drill bits good for stainless steel?
Cobalt bits are a relevant option for stainless steel drilling. The BOSCH set is specifically listed for stainless steel and uses M42 cobalt alloy.
Can one drill bit set work on metal, wood, and plastic?
Yes. Both DEWALT sets are listed for multiple materials, including metal, wood, and plastic. Check the individual product’s stated features before choosing.
What does a split-point tip do?
A split-point tip is designed to help reduce walking as the bit starts drilling. It appears on the DEWALT DWA1184 and Champion sets.
When should I choose a step drill bit?
Choose a step bit when you need different hole diameters within the bit’s stated range. The EZARC model offers nine steps from 1/4 to 3/4 inch.
Is a coated bit the same as a cobalt bit?
No. A coating and the bit’s base material are different product characteristics. Check whether the listing specifies cobalt alloy, a coating, or both.