General description This Tile Drill Bits set includes 5 high-quality diamond drill bits designed for precision drilling in hard materials such as glass, ceramic, granite, marble, limestone, quartz, and terrazzo. Made from durable emery material, these bits are electroplated for wear resistance and longevity, ensuring a sharp and effective drilling experience. Technical specifications Material: High-quality emery Sizes: 5mm, 6mm, 8mm, 10mm, 12mm Compatibility and accessories Compatible with most machines including hand drills, angle grinders, and bench drills Usage Ideal for drilling hard materials such as glass, ceramic tile, granite, marble, limestone, quartz, and terrazzo Depth markings for precise drilling Side grooves for efficient dirt removal and smooth drilling Other information Diamond coating enhances drilling speed Scientific chip removal design for stability