Vitrex 10279400V Hard Tile Drill Bit - 12mm | Wickes.co.uk
Diamond Drill Bits, 10 PCS Hollow Core Drill Bit Set for Ceramic, Glass, Porcelain Tile Diamond Hole Saw Tile Set Glass Drill Bit, 6 mm to 30 mm : Amazon.co.uk: DIY & Tools
DEWALT 5/8-inch Diamond Drill Bit | The Home Depot Canada