"Having been renovating a 17c house for some years where the walls are either too soft or very hard I had warn out all my old masonry bits. Finally bought these and I should have purchased some quality one years ago. Took all the pain out of fixing plumbing in awkward places. Good clean hole easily hammer drilled. Very good"
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Review 2 for Bosch X-Pro Stone Impact Drill Bit Set 7Pcs