[PREMIUM MATERIAL]Constructed from alloy, our 30 pcs masonry drill bit set is significantly harder than ordinary high-speed steel. It offers exceptional wear and impact resistance, ensuring durability and reliability for long-term professional-grade performance in drilling concrete and brick walls. [PROFESSIONAL HOLE DRILL BITS]Featuring -coated drill bits, our set is designed for a variety of materials including ceramic, glass, wood, and metal. The electroplated hard particles reduce the risk of cracking and chipping, allowing for smooth, clean-cut holes with reduced vibration and stress. [MULTIPLE SIZES FOR VERSATILITY]Our concrete drill bit set includes a wide range of diameters, from fine to coarse, catering to diverse needs from delicate installations to large construction projects. This comprehensive selection ensures seamless preparation and a smoother workflow for home improvement and professional tasks. [WIDE APPLICATIONS]Ideal for drilling into concrete walls, bathroom tiles, glass mirrors, and marble countertops, this set handles various materials with ease. It eliminates the need for multiple purchases and replacements, significantly enhancing work efficiency across different tasks and materials. [MODERN DESIGN & EASY USE]Each drill bit in our set features a classic blue exterior and a carefully designed geometry for easy positioning and precise drilling. The non-slip and meticulous attention to detail simplify operations, making it accessible for both professionals and non-professionals alike. Color: As Shown Material: Metal Package Contents: 30 Pcs Professional Masonry Drill Bit Set Only the above package content, other products are not included. Note: Light reflection and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.