Review on ARTU 01440 Porcelain Tile 16 Inch by David Fields

I drilled 20 holes in porcelain stoneware with less chipping and chipping than expected and no noticeable wear or dullness with these bits. Eventually the pilot part got so hot that I had to handle it gently, but most of the time it stayed cool enough to hold (no water cooling). They are "made from European components assembled in China" (according to the packaging), which is why the ARTU-USA, Inc. brand - a complete fabrication.