🔧 Drill Your Way to Perfection! Lubrication recommended for optimal performance and longevity. Crafted from industrial-grade carbon steel for extended service life. 15 different sizes (6mm to 50mm) for all your drilling needs. Designed for clean, accurate holes in various hard surfaces. Customer support ready to assist with any issues. Premium Material 15 Sizes Wide Usage The YLYL 15 Pcs Diamond Drill Bits Set offers a comprehensive range of sizes from 6mm to 50mm, perfect for drilling through tough materials like glass, marble, and granite. Made from high-quality carbon steel, these bits ensure durability and precision, making them an essential tool for both DIY enthusiasts and professionals. With a commitment to customer satisfaction, this kit is designed to meet all your drilling needs.