Review on LENOX 29966 66CG Carbide Grit Hole Saw by Donnell Cursed

It was advertised that tiles would work. I worked on a piece of 5/8 tile for about 45 minutes, using water to keep the blade cool and not burn it. I only had to cut two holes, and this blade couldn't even cut one hole. After about half an hour I was only half over the tiles and gave up. I don't know about other materials, but it's nonsense about tiles. I returned it and bought something else to do the job.