Tool bit worked great. No chipping of brick on the exterior wall. So much better than a mansonry drill bit which almost always chips the brick when it exits the exterior wall. I drilled thru 8in block with exterior brick. Diamonds look like they are intact. I talked with a electrician about drilling the hole, his quote was $350.00-400.00 for a 1 3/4 dia. hole, no way, your company saved me a lot of money, by having a drill bit for the DIY. Thank you!
4 years ago
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