... tile hole saw 1.Size:2-150mm 2.straight round shank 3.Zinc Plated 4.Diamond tip Zinc plated diamond tile hole saw ... Zinc plated Diamond glass & tile hole cutter Diameter from 2mm ... to drill glass,ceramics, porcelain, ceramic and porcelain tile, limestone, slate, marble, granite, stone, and fiberglass ... lubrication.Pictures: Zinc plated diamond tile hole saw