Milwaukee 15 Piece Cobalt Drill Bit Set


Milwaukee has been releasing a lot of new drill bits.  Not too long ago we took a look at the Milwaukee Shockwave Titanium Drill Bit Set.  Today we are going to look at the Milwaukee Cobalt Drill Set.  So what’s up with these new bits?

As with all the other Milwaukee drill bits, I love the fact they come in a case.  The case is easy to open and close, plus a great way to stay organized.  They even incorporated a thread hole to put attachments on the case such as a clip to keep on your belt or even a magnet to hold to the wall, but those do not come with the case.  Once you open the case, you can easily see what size bits you are dealing with.  In this case, this is a 15 piece kit and comes with sizes that vary from 1/16″ up to 1/2″.  There are a couple things to note about these bits.  You have probably used Black Oxide bits in the past.  While they tend to be less expensive, they also tend not to hold up as long.  The new Milwaukee bits are said to hold up to 10x longer than the traditional Black Oxide bits.  Good thing is, you will not be paying 10 times more for these bits.

Milwaukee designed these bits with a “Red Helix” design which assists in faster chip removal from traditional bits.  Fast chip removal not only means a faster hole drilled, but a longer life of the bit since it’s not trying to grind up chips.  The tip of these bits are 135° tip which helps prevent walking when first starting your hole.  As with the Shockwave bits, these also have a variable helix design.  The variable design allows for faster waste removal.

Now I haven’t used these bits day in and day out, but the design of the bits really does say a lot.  Milwaukee put thought and time into the design of this bit.  This wasn’t just something they said, let’s get a drill bit and put our name on it.  They changed the important aspect of the bit to truly produce a much better bit than what the current market has to offer.


  1. Hopefully these perform a bit better than their older ones, never had good experience with Milwaukee drill bits.

  2. I have the hex shaft ones, any difference between those and the ones mentioned here besides the hex? So far I’m liking the hex ones quite a bit, no pun intended, and it’s handy to be able to throw them in an impact when needed…

  3. I don’t have any experience with these drills but I do have experience with the Milwaukee drill bit cases. The two rows of bits on the left are so close together that it is very easy to cut the back of your fingers on the second row of bits when you are trying to get a bit from the first row. Does the quality of the bits matter if the execution of the case is flawed?

  4. Different type of Cobalt Drill Bits are perfect for most common metal drilling materials, but these bits can not handle hardened metals and some heat treated steel. They are good for general drilling and work well on non ferrous metals. Thanks for sharing this wonderful post with us.


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