Review on 💎 Versatile Uxcell Diamond Granite Fiberglass Ceramic: Unleash the Power of Durability and Elegance by Lawrence Reuter

Just drilled through my 1.15" thick granite countertop - drilled through about the last .020" but who cares about the bottom. Use plenty of water, work slowly, and start cutting at a slight angle, straightening the bit when the bit touches the granite.