A Masonry Drill Bit Set (5, 6, 8, 10mm) is specifically designed for drilling into hard materials like stone, concrete, brick, and masonry surfaces. These drill bits typically feature a carbide tip for durability and high wear resistance. The spiral flute design helps in efficiently removing debris while drilling. This set includes drill bits of varying diameters (5mm, 6mm, 8mm, and 10mm) to accommodate different hole sizes. They are commonly used with hammer drills for better penetration into tough surfaces.