Review on JOINER Diamond Masonry Drilling Gemstone by Justin Sherman

Got a drill and started drilling porcelain stoneware floors. It's definitely the right tool, as always. The drill leaves almost no impressions on my floor. When I first started using it, I encountered 2 problems: 1. The drill bit wears out on each of the holes I drilled. Basically half the tip is gone and bigger isn't sharp enough for the next hole bending when it gets soft. Make sure you don't have the expectation of using it again and again when drilling into hard material like porcelain.