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If you have worked with automooles in metal equipment or vehicle parts. The best cobalt drill bit sets are indispensable for working when you have steel appliances or vehicle accessories that need to be adjusted. However, not all cobalt drill bit sets are equal.
Here is a review of the top 6 cobalt drill bit sets with a buyer’s guide included to help you answer that question.
- Top 6 Best Cobalt Drill Bit Sets In 2021 Reviews
- Best Cobalt Drill Bit Sets Buyer’s Guide
Top 6 Best Cobalt Drill Bit Sets In 2021 Reviews
1 Irwin Tools – Bargain Bits
Irwin makes quality drill bits, many of them at around 8% cobalt levels. However, this 29 piece drill bit set is set at only 5% cobalt. This means it is softer and not as great resistant as may be required for your tougher steel-boring job.
On the other hand, this set gives you more bits for your bucks. Offering a range of sizes from 1/16 inch to 1/2 inches in every 1/64 inch every segment.
2 Drill America DWDCO Series – Self-Centering and Slick
Here is another cobalt drill bit set that includes 29 pieces. Also, it increases sizes by 1/64 inches, from 1/16-1/2 inches.
Additionally, these bits have a gold finish which helps to lubricate the bit and prevents excessive wearing. The self-centering point keeps it from tearing out chunks unevenly. Like the previous best cobalt drill bit sets, these are made with a smaller percentage of cobalt which means it will not cut as easily through harder steel.
3 USA Drills Cobalt Drill Bit Set – Gently Does It
The reviews for this drill set vary in the extremes from the best cobalt drill bit sets to the worst. This usually indicates one or two situations in hardware tools.
The first possibility is that this company is inconsistent in its product. It is possible that the amount of cobalt mixed into the steel of these bits is not consistent. However, in this case, there is likely another possibility pulling down the ratings.
The second possibility is that the requirements of using this drill bit set correctly are either too challenging or not communicated well enough. This could lead customers to use these bits at higher speeds or on harder metals than they were designed to cut.
Regardless of which of these two problems the product has, the customer service and warranty assistance are not helpful enough to illuminate what the problem truly is.
4 CO-Z Step Drill Bits – Stepping Up DIY Bits
This Titanium Step Drill Bit Set comes with 5 pieces that accommodate 50 different sizes of holes. While they are advertised for sheet metal, they work much better for softer metals and wood. These stepped-up bits provide a wide variety of options for those involved in DIY projects.
These titanium coated bits are more durable than the other best cobalt drill bit sets, but they still have their limits. When used with a center punch, they offer smooth drilling and cut much better. One of the best qualities of all is CO-Z’s customer service, which stands by their product and is eager to assist you in case of problems.
Additionally, being on a 5-piece set, you get more for your money with this set.
5 Craftsman Professional Cobalt Drill Bit Set – Value Set
This may be the best cobalt drill bit set for your money. It comes with the standard 21 pieces, set just below the typical 1/16”-1/2” (it stops at 3/8”). It is nearly identical to the Irwin tools but comes in at half the price.
While it shares similar specs with the other sets, it also shares their weaknesses. Although it is advertised as designed for heavy duty use, these bits last longer and perform much better on softer metals.
6 Neiko 01925A – Screw Extractor and Left Hand Drill Bit Set
This 10 Piece set of Alloy Extractors/Cobalt HSS Drill Bits is one of the best cobalt drill bit sets for left-handed drills.
If you read the description carefully, you will see that these are not ordinary bits. Instead, these bits are made for extracting screws, bolts, studs, and other fittings. Additionally, the special does on the screw extractors dig into the screw and provide the necessary torque to pull it out.
These bits are very inexpensive, and, consequently, are not strong enough to bite through sheets of metal. However, they work well as extractors.
Best Cobalt Drill Bit Sets Buyer’s Guide
The Irwin, Drill America, and Craftsman have similar levels of durability, although the Craftsman is about half the price of the other two beat cobalt drill bit sets. Durability is an essential aspect of drill bits. The reviews consistently report that the most durable do bits are sold individually, not in sets.
The CO-Z set is also particularly durable, but this set is designed with a special step up technology, which makes it harder to compare with the other bits.
The least durable bit set is the USA Drills bit set. Not only did it shares similar weaknesses with the other sets, but it also had the worst customer service rating to deal with durability issues.
In the world of drill bits, the best cobalt drill bit sets have the highest number of drill bits in them. Both the Irwin set and the Drill America had 29 pieces in their sets. However, the CO-Z set, having only 5 bits, can drill up to 50 different sizes of holes. This makes the CO-Z set the most flexible of all of the best cobalt drill bit sets.
While most pieces of hardware follow the rule that you get what you pay for, when it comes to the best cobalt drill bit sets there seems to be a cutoff point. For standard drill bit sets between fifty and a hundred dollars, there appears to be little value gained. You either pay more by purchasing higher quality cobalt drill bits individually, or you can find similar quality bit sets for half the price.