Review on Diamond Ceramic Porcelain Countertop Technology Cutting Tools ~ Hole Saws & Accessories by Mike Newbill

I used it for 3 cuts in bathroom wall tiles: first cut in 45 minutes; the second lasted an hour and ten minutes; the third lasted almost two hours. All cuts were made with water constantly added through a spray bottle. I think I paid $35 because I needed it fast and this expensive one was available. There are cheaper and better ones