Best Cobalt Drill Bits of 2021

Drill America has a long history of making tools to a high standard, and this 29-piece cobalt drill bit set is no exception. They have a self-centering 135-degree split point tip to penetrate easier and reduce instances of walking.

It means you can drill smooth and hard material without a pilot hole, and it produces small chips to reduce clogging. Each bit is coated in gold oxide to improve the wear resistance and to help lubricate the bit as it cuts through.

The sizes range from 0.062 inches up to 0.50 inches in 0.016-inch increments. And to keep things neat and organized, the entire set is in a plastic case for handy storage and portability.

DeWALT is another brand that focuses on quality and value. They are a great American success story and are recognized worldwide as leaders in tool making and accessories.

These bits are pilot-point designs, so they are less likely to need a pilot hole drilled. They are also less likely to walk across the surface of the metal. The sizes range from 0.062 inches up to 0.375 inches, so not quite the same scope as the Drill America set but still enough variation to cover most tasks.

This set contains 5 percent cobalt, making them M35 grade, and they are for use on hard metals like stainless steel, angle iron and I-beams.

When you think of Bosch you automatically think of German engineering and efficiency. Bosch is one of the leading tool and accessory manufacturers globally and has gained a reputation for quality.

This 14-piece drill bit set comes in sizes ranging from 0.063 inches to 0.50 inches, so whatever the task, this set should cope. Bosch has engineered these cobalt drill bits for the professional market.

What makes this set the ideal choice for contractors and pros is they have been designed with a split-point tip for no skate starts. Right from the get-go, you make accurate holes without slippage.

These bits can also tackle lighter duties like wood, plastic and light gauge metals, making them a great all-rounder.

This is a 29-piece M35 grade cobalt drill bit set. The sizes start at 0.062 inches and scale up to 0.50 inches. Each bit has a split point 135-degree tip to increase accuracy and reduce wandering across the surface of the metal.

These drill bits contain 5 percent cobalt and are for heavy-duty applications like drilling through stainless steel, cast iron and titanium. They come in a professional-grade storage case lined in rubber and with removable cartridges to make it easier to transport your bits to your worksite.

So far, so good? The only downside is the cost. This set costs almost four times the price of the DeWALT set. At this price tag, these cobalt drill bits are likely to appeal to the professionals.

If value for money is your number one priority, this Comoware drill bit set is hard to beat. This is a 13-piece set, so it lacks the options of the Irwin Tools set, but again, the price is more affordable and costs 6.5 times less.

The sizes range from 0.062 inches to 0.25 inches, highlighting the limitations of the size selections, but at this price, something has to give. The bits are 135-degree split point tips for improved traction, cutting ability, and reduced movement across the surface of the metal.

You even get a carry-case with a size index to make choosing the right attachment easier. All in all, this is a good quality set for not a lot of money. It would be an ideal drill bit set for a beginner.