Four sizes in one package - Includes 6 mm, 8 mm, 10 mm, and 12 mm drill bits. Each bit is clearly marked for easy identification to quick-select the right size for a wide range of projects, from DIY tasks to professional applications. Carbide construction for durability - Made from high-quality carbide to resist wear and maintain sharpness over time. This durability allows reliable drilling through hard materials such as tile and metal with less effort and fewer bit changes. Efficient chip removal design - Features a slanted head that facilitates effective removal of drill debris. This helps keep the drill holes clean and reduces material buildup that can slow progress. Practical applications and use scenarios - Tile installation and repair: create precise holes in ceramic or porcelain tile for anchors, bolts, or fasteners. - Metal fabrication and assembly: drill through sheet metal or metal workpieces with consistent performance and hole quality. - General hard-material drilling: suitable for projects that require clean, accurately sized holes in challenging surfaces. Key attributes - Function: drill bits for hard materials - Size range: 6 mm, 8 mm, 10 mm, 12 mm - Material: carbide for wear resistance and durability - Performance: sharp, durable cutting edges with efficient chip removal for clean holes and steady progress