Review on 🔹 SHDIATOOL Diamond Porcelain Marble Granite by Louis Asok

Uses these for shower door hinge screw holes. After wearing out two very expensive diamond tipped hole saws on just three holes, this bit quickly made the rest of the holes I had drilled in porcelain stoneware. I have found that a small dimple made with a masonry bit helps keep the diamond bit centered. Saved me a lot of time and nerves.