FOUR-FLUTE DESIGN: Engineered with a four-flute configuration, these masonry drill bits offer not only faster drilling but also efficient debris removal. This design ensures cleaner holes and a smoother drilling experience, making your work quicker and more precise. CONSTRUCTION: Crafted from high-strength steel, these drill bits are built to withstand rigorous use. Their robust construction guarantees durability and resistance to wear, making them suitable for both professional and heavy-duty applications. PRECISE DRILLING: Featuring an eccentric tip design, these drill bits allow for enhanced accuracy in hole placement. This precision prevents wandering at the start of drilling, ensuring your holes are exactly where you need them, every time. SIZE RANGE: This comprehensive set includes drill bits in sizes 6mm (2 pieces), 8mm, 10mm, and 12mm, covering a wide range of drilling needs. Whether you're working on home projects or professional tasks, these bits provide the versatility required. USAGE TIP: For optimal performance, especially when dealing with hard materials, it is advisable to use water for cooling. This practice helps in extending the life of the bits and achieving smoother, more efficient drilling results. Color: Blue Material: Metal Package Contents: 5*Masonry Drill Bit 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.