
I've been addicted to this...instead of a diamond hole saw...a YouTube video of the Spyder team drilling holes in a concrete block fence. Exactly what I wanted to do. However… this tool is short-lived. After grinding the concrete block of the fence, two 2 inch (51 mm) diameter holes were drilled. But . I found that one of the carbide bits (of three) on the tool was broken in half, chipped. Although this tool "does the job"... I'm disappointed it went bad after only two holes. Therefore I gave two stars. Yes it works. No, I will not buy again. I would spend the few bucks more and buy a smooth hole diamond hole saw.

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