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To sum it up, spend the money. I am now a believer and will only use these cobalt bits from now on.
Well, as I struggled to drill through the steel, I burned up a couple titanium coated bits even though I was spraying WD40 as a lubricant on the holes being drilled. The job seemed impossible.
I never appreciated the difference between these cobalt bits and the high speed steel and titanium coated steel bits. Unbelievable the difference these cobalt bits made.
I read the reviews on these bits and decided to give them a try. They drilled through the steel like it was wood.
They really hold their edge and seem much more heat resistant than non-cobalt bits. These bits are really worth the price.
I put one of the new bits in my cordless drill and. WOW these bits are the best I have used in years. All of my old bits were dull. DRILLED A 1/4 INCH HOLE IN MY MIDDLE FINGER ON MY LEFR HAND, IF IT WERE NOT FOR THE BONE I WOULD HAVE GONE STRAIGHT THRU MY NAIL. My Dad always said " Son if you are going to be STUPID you better be tough." KW
I wasn't sure if this was a good gift for Dad for Father's Day but mine loved them, turned out to be a great gift.
These bits are super. Stop wasting your money on the cheap stuff; get the best.
I have drilled 25, 3/8" holes into hard steel and the bit is as sharp as it was on the first hole. LOVE these bits.
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