Description : Diamond Core Drill Bit Vacuum Base Guide For Ceramic Marble Glass Tiles Slate Features : Vacuum base guide, includes drill diameters 4, 5, 6, 7, 8, 10 and 12mm. It is designed for drilling glass, ceramic tiles, marble and slate. The diamond core drills will give a perfect cut each time. Overall Size: Approx. 9.7cm x 8cm\/ 3.82" x 3.15" Package includeds : 1 x Diamond Core Drill Bit Vacuum Base Guide Details pictures :