DAMO 1-1/2 inch Dry Wet Diamond Core Drill Bit for Concrete Granite Stone Hole Saw

I needed to cut through a granite countertop, 1 1/4" thick. I used a hand-held variable speed drill and a hole bored through wood to get the bit started. The process was spray with water, drill for a minute or so, then wipe with paper towels and repeat. It took about 90 minutes, and the grit was worn almost to the metal when finished. So, it did the job, and I'm happy with it, but I wouldn't expect more than one hole in a thick and tough material such as granite.

Did an excellent job and in a jiffy, its diamond cutters tore through tile like butter while allowing excellent stability and predictable cutting precision

I expected to get more the one hole drilled for the cost. You will get more use out of the more affordable hole saws. I drilled one hole through 3/4 inch granite and then nothing.

Very good quality

Work as advertised. Good product

It`s good!

I needed a hole in my granite counter top for a new faucet. I had used another bit from this manufacturer on marble and had excellent results. use a hammer drill and just be sure to drill straight into the stone - if you dont, and try to correct it half way through, you can snag the bit in the rock and bend the adapter, i have done it before. no fault of the bit though. Great quality.

Worked great. It cut through a granite counter very well.