Review on Acrux7 4-Diamond Electric Porcelain 2-Inch by Brandon Addison

These bits are great if you want a wide variety of size options but won't buy them for durability. I can poke about 6 holes in the tile with each bit before they get too worn out. I'm sure they do better with glass or tile than ceramic. My Dewalt drill bit can drill about 40-50 holes but costs about 5 times as much. In short, it does what it says on the tin but you get what you pay for. For a home master, they are quite suitable.