I was able to get through about 16 holes in 1922 concrete with one of these bits before it was just too chewed up. I got another bit to finish up another 12 holes in ~1950 concrete. This was more difficult and I couldn't drill a few holes as deep as I wanted.
A pro would insist that an SDS hammer drill and corresponding drill bit would be the only way to go. As a DIYer with a cheap hammer drill, this was worth the try over spending $$$ buying or renting and SDS drill. This bit was pretty cheap and lasted as long enough for me to be happy with its value.
No masonry bit lasts forever, but this is good quality steel and seems to holds up well. I just n...
May 09, 2017
Verified Purchase & Recommended Product
No masonry bit lasts forever, but this is good quality steel and seems to holds up well. I just needed it to drill holes in our exterior brick for some sleeve anchors to mount a hose real. Did the job with no problem, drove into the brick fairly easily on hammer mode and did a decent job of clearing dust and debris from the holes at the same time, and after a half-dozen holes, the bit still looks good. The little ridges on the edge of the shank (Bosch markets them as "PowerGrip," or something like that) do seem to help keep the bit from slipping in the chuck. Overall, very satisfied with the purchase. Bosch makes predictably good stuff, and the price was reasonable.