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Cobalt: Essential for Batteries and Bright Blues

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Cobalt is associated with the color blue, but it's so needed for rechargeable batteries that the U.S. put it on the list of minerals it can't live without.

What are cobalt drill bits?

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What are cobalt drill bits? Visit HowStuffWorks.com to learn more about cobalt drill bits.

What type of drill bit do I need for metal?

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Drill bits are made of different materials, and the type you need depends on the kind of job you need to do. Learn what type of drill bit you need for metal in this article.

Best Drill Bits for Hardened Steel

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If you're drilling through hardened steel, you'll want to use a cobalt drill bit. Find out about the best drill bits for hardened steel in this article.

How Magnets Work

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Magnets produce magnetic fields and attract metals like iron, nickel and cobalt. They're used in all sorts of applications but how are they made and how do they work?

Hard Tail: A Chopper Profile

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Hard Tail is a custom chopper mixing top-of-the-line parts for a one-of-a-kind chopper. See photos and specifications for this unmatched chopper.

If We Give You a Periodic Table Symbol, Can You Tell Us What Element It Is?

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The world is more than 4.5 billion years old, but the entire universe and everything in it is made from just 118 elements (as far as we know). If you can ace this quiz, you're close to knowing everything about the world. See if you can name the correct element based just off its periodic symbol.

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