- Pack of 5 Meccion 6mm drill bits designed for drilling porcelain, tiles, glass, marble, and granite - YG6X tungsten carbide construction ensures long service life and wear resistance - High-precision cross tip for easy penetration of hard and delicate materials - Innovative double flute allows for quick chip removal and improves drilling efficiency - 1/4" hex shank for quick and secure bit changes, compatible with most electric and bench drills - Suitable for multiple materials: ceramic, concrete, brick, plastic, wood, cast iron, and aluminum - It is recommended to keep the drill in a vertical position and use water to cool the bits during use