These masonry pieces exceeded all my expectations. I did a test by drilling through the end of a concrete block. The chisel drilled a nice clean hole in no time. I love the fact that these bits are longer than the others currently on offer. They come in a plastic case for carrying and storing. Unfortunately, the case is torn on the underside, but that affects all the details (see photo). Also, they seem to keep them in order, so I'm not too worried about that. We have a stone facade on the outside of our house. I need to drill a hole in the outside wall so I can run the antenna coax cable through it. Although these drill bits are longer than others, I still don't think they have enough reach to drill through the interior. However, I can drill through the stone part first and then finish drilling the wood with a longer wood drill bit. I am impressed with the performance of these drills. I highly recommend them.
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