Review on DiamondSure Diamond Granite Ceramic Porcelain Cutting Tools: Premier Industrial Drill Bits by Marcelo Montalvo

DO NOT BUY! I installed a new Toto toilet in our master bathroom and had to drill 6 holes in the porcelain stoneware. I started with the Milwaukee Diamond Plus hole saw. After 5 holes I thought maybe it's worn out. So I switched the Diamond Sure drill to a diamond drill. This was enough for exactly 1/2 the hole until all the diamond dust came off the tip. half hole! I filled the holes with a Milwaukee drill bit. Jeff Bezos should be ashamed to keep this piece of junk.