Best Cobalt Drill Bit Sets: Drill Through Hard Metals Faster
Drill smarter, not harder, with these top cobalt drill bit sets
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PUBLISHED ON November 5, 2019
Some of the bit sizes are inaccurate and slightly smaller than listed. The latching system on the carry case is difficult and awkward to open.
High heat-resistant drill bits with eight percent cobalt alloy and surface-hardened, no-skate tips for maximum performance and durability. Available in a wide range of individual sizes and 14- or 21-piece mixed drill bit sets in a handy carry case.
Indexing on carrying case is difficult to read. The product is slightly more expensive than some of its rivals.
Set of 14 industrial-strength cobalt steel drill bits in a range of commonly used sizes from 1/16 to 3/8 inch. Specifically designed for use with hard metals, these bits include pilot point tips for accurate drilling, clean holes, and a reduction in locking up after breakthrough.
Packaged in the heavy-duty case with interlocking hinge for guaranteed protection and labeled bit slots for ease of use and organization. The set includes a replacement for each of the three most common drill bit sizes.
Only available in one set size. Some users describe performance of drill bits as aggressive and grabby.
All of our reviews are based on market research, expert input, or practical experience with most products we include. This way, we offer genuine, accurate guides to help you find the best picks.
If you’re looking for a set of bits that can make your next auto repair project easier, consider adding the Irwin 29-piece Drill Bit Set, M35 Cobalt Steel to your tool kit. Featuring a spiral flute, these precisely-machined bits give you accurate and powerful results. Made out of cobalt-fortified steel materials, these drill bits are capable of withstanding a fair amount of heat. In fact, the metal includes a full five percent of cobalt, bracing the tools to retain their structural integrity despite abrasion and temperature. Ranging in size from 1/16 inch to 1/2 inch, this set comes with all the bits you are most likely to need. With a 135-degree split, they avoid travel during the drilling process, making work both easier and more efficient overall.
你打算解决维护项目吗nd need a set of bits that can keep up with the demand? Check out the DeWalt 14-Piece Cobalt Pilot Point Drill Bit Set for its balance between strength and function. The bits range in size from 1/16-inch to 3/8-inch, which makes the set ideal for all types of projects. All of the pieces come encased in a strong polymer container that makes it easy to store the bits and keep them organized. The ABS material won’t crack nor will it let moisture get close to the bits, preventing the risk of rust and corrosion. Made of cobalt-heavy steel, these precisely constructed bits use a spiral flute to give efficient results. Ideal for compact storage and versatile performance, this bit set is a truly worthy candidate.
Even though the tough construction of the bits is really desirable, they are fairly heavy. Keep this in mind when handling the drill at first to avoid any issues with the bits traveling while you’re using the drill.
Is your garage already overflowing with tools? Want a set of bits that will work well and not take up a ton of space? Try the Drill America 29-piece Cobalt Drill Bit Set for the unique storage mechanism and sturdy design. Despite coming complete with a large supply of drill bits, ranging from 1/16 inch to 1/2-inch, the set fits just about anywhere. It comes in a round container with individual slots (each clearly marked) for the different bits. The parts themselves feature a spiral flute and a 135-degree point. Split for efficient penetration of hard metals, these bits operate powerfully and precisely. Since the pieces increase in size by 1/64-inches, it’s no issue finding compatible parts. Complete with gold plating, these cobalt-heavy drill bits are able to retain their strength at high speeds, making them ideal for automotive work.
专注于发现阿工作的一套工具ver the long term? Stroton Store Metric Cobalt Drill Bits live up to even the most demanding standards. Made out of cobalt-heavy steel, the metal includes eight percent of this powerful element, ensuring full structural integrity. Falling between 68 and 70 on the Rockwell Hardness Scale, these bits aren’t prone to chipping. They also won’t lose the effectiveness of the split point tip due to ongoing use. Designed to quickly slice through all types of metals including galvanized steel, these bits are ideally suited to automotive work. The bits aren’t prone to travel during work, letting you focus on precision tasks with more ease. Coming with 19 pieces, these bits range in size from 3/64-inch to 1/2-inch bits, this set is complete with a bit for any project you may need to tackle.
One downside is that the markings are in metric, so if you aren’t familiar with that system, it may require an extra step to convert the digits. In terms of construction quality, however, these bits definitely earn this honorable mention.
- Extend the life of your cobalt drill bits by sharpening them after they become dull, but keep in mind you won’t be able to replicate a pilot point tip when doing so.
- Make sure you know what you’ll be using the drill bits for before choosing a set, so you can be sure you choose one with the right sizes.
Q: What is the difference between M35 and M42 cobalt steel?
A：Cobalt steel drill bits are ideal for use with hard metals, like cast iron or stainless steel, because they can be sharpened and have high heat resistance. Titanium bits cannot be sharpened but are equally hard and have anti-corrosive properties so they may provide superior performance with wood and softer metals.
Constructed in industrial-strength steel with five percent cobalt, theIrwin 29-piece Drill Bit Set, M35 Cobalt Steelis our top pick overall, while theBosch Cobalt M42 Drill Bit Setis our best value set.