The Bihui M14 Dry Drills Diamond Hole Saw 6mm (BU-DBDF06) is a precision-engineered, diamond-coated hole saw specifically designed for dry drilling small, accurate holes in hard materials like porcelain, ceramic, granite, and marble. Perfect for professional tilers, plumbers, and contractors, this tool is essential for creating exact holes for fasteners, anchors, and screws in tile and stone.