10Pcs Diamond Drill Bit Set, 8-50mm Glass Tile Hollow Core Extractor Remover Tools Diamond Hole Saw for Glass Ceramics Porcelain Ceramic Tile by Jelbo

DIAMOND DRILL BIT: Diamond drill bits ,or diamond core drill bits, diamond hole saw or bonded diamond drill bits. They are often referred to as glass drill or tile drill, but since they are used to d..