Long life, fine diamond grit for a professional quality finish without chipping tiles. Easy to maintain, self-cooling and self-sharpening grit. Suitable for dry and wet cutting. Suitable for Tiles, Porcelain, Ceramics & Non-Toughened Glass Wet & Dry Use For Combi Drills Steel 1/4" Hex Shank Diamond Tip Fast Drilling Speed Use on Full Speed for Best Results & Longer Life No Need for Water Used once of a soft marble composite so still in great condition
eBay