Features: Featuring high quality carbide tips for efficient drilling through tiles, concrete, glass, and more. Designed with a unique triangular shank, these drill bits offer multi angle cutting capabilities, ensuring smooth penetration and reducing the risk of chipping or cracking on various surfaces. Ideal for DIY enthusiasts and professional contractors alike, this versatile set caters to both home renovation projects and small scale engineering tasks. Perfect for diverse applications, from installing wall hangings and switches to expanding holes in ceramic tiles and granite, making it essential tool in any toolkit. With its anti slip design, this set ensures a secure grip and stable operation, even for users with limited experience, enhancing safety and ease of use during all drilling activities. Specifications: Component:hard metal Quantity:4pcs/5pcs/6pcs/7pcs Package Includes: 1 Set Drill Bit note: 1.Please allow 1-2cm errors due to manual measurement, make sure that you donot mind befores you order. 2.Due to the differences between different monitors, the picture may not reflect the actual color. Thanks for your understandings.