Description 4 12mm Diamond Hole Saw Drill Bit Guide Glass Ceramic Tile Hole Opening LocatorSpecification Drill guide size 4mm 5mm 6mm 7mm 8mm 10mm 12mm Base Fixture vacuum suction baseFeatures 1 Designed to drill glass ceramic tiles marble 2 Great for those hard to reach awkward areas likedrilling horizontally in tiled wall or vertically in floors is much easier with this guide 3 Attaches to most tiled surfaces by means of its lever operated vacuum base 4 Suit for 4mm 12mm drill bits Package Included 1 x Diamond Drill Bit GuideMore Details