Bosch HCBG800 Blue Granite 8-Piece Hammer Drill Bit Set
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Customer Review
sawdust maker
I knew Bosch made quality tools and router bits so I thought I'd try the Blue Granite set. I've only used the 2 largest bits in the set, but they performed great...never slowed down through concrete and rock.
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Work Good, Last Long TIme
WHat can you say about masonry bits> They worked good when new, and they work good after many holes in hard concrete. I noticed that Milwaukee bits have a hex shaped shankfor a more positive lock in the chuck, and these do not. But they work well and last long.
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Great Bits
Considering that I purchased a 1/2 inch drill for 1/3 the cost of this set ... The purchase of this 8 pack (which includes the 1/2 inch) was a good deal. The drill bit made short work of 20, 1/2 inch holes drilled about 4-5 inches deep in 5000 cement. Used a Milwaukee 5380-21 drill also purchased on Amazon and made short work of securing hand rail flanges in the cement. I used Simpson Strong IXP Anchor Bolts and SetPac Epoxy to "glue" (a weak word for it as the epoxy hardens harder than the cement) the anchor bolts into the cement. The epoxy meant my holes didn't have to be exact as the epoxy expands to hold the bolts in the drilled holes. However, my holes were pretty exact in either case with the bosch drill bits. Great bits.
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Product Description
BlueGranite hammer drill bits deliver fast impact drilling in concrete, stone and masonry. Low voltage, high temperature brazing prevents the carbide cutting edge from breaking out even when heat builds up during deep drilling. Top to learn more

