Buy DEWALT DW5906 5-Inch by 4-Inch Core Bit BodyDEWALT DW5906 5-Inch by 4-Inch Core Bit Body Product Description:
- Tungsten carbide teeth for maximum durability
- Hardened steel body for increased durability
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2 of 3 people found the following review helpful.
By Carl Abrams
I need to drill five inch round holes in solid cement. For a dry drill, this works quite well. It should be stated somewhere that this bit does require both the shank and centering bit, also, so there's an extra $75 or so. Also, this bit cannot do well in aggregate. Smooth cement and concrete it does quite nicely in, though. When you get to the maximum depth (about 3 inches) then pull the bit out and chisel out the initial cut, then you can finish drilling. I've gotten 20 holes out of it without resharpening yet.
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