General description Tile Drill Bit set includes 10 pieces designed for drilling holes in various materials such as glass, ceramic tiles, concrete, iron, brick, marble, and wood. The set features a double spiral design that enhances chip removal efficiency and prevents stagnation during high-speed operations. Technical specifications Includes drill bits of sizes: 3mm, 4mm, 5mm (2 pieces), 6mm (2 pieces), 8mm (2 pieces), 10mm, and 12mm Hex shank for secure fitting Other information Temperature resistant for efficient and clean drilling