Review on 💎 DKIBBITH Diamond Granite Ceramics by Jimmy Jefferson

I had to drill eight 1/2" deep holes in 3/4" porcelain stoneware. I was hoping those five eight holes would last. Well, I was surprised that one drill bit could drill eight perfect 4" holes in very dense porcelain stoneware. Look at the photos. I know I can drill more with the same drill bit. This is the best drill for the money. used water for drilling.