Review on 9.5" Diamond Dry Core Bit For Brick And Block With SDS Plus Pilot Bit Adapter, 5/8"-11 Arbor And 9.5" Drilling Depth - Perfect For Concrete Drilling by Erik Barela

I bought this hole saw to drill a hole in my brick wall to run a refrigerant lineset and wiring through when I installed my mini split heat pump. This hole saw was a bit slow to go through the brick and I had to stop and let my drill cool off a couple of times, but the brick was pretty thick and it got the job done eventually, so I can't complain for the price. The tip doesn't look like it has been damaged or significantly worn out either, so it seems to have survived drilling the hole.