High-quality material: Made from tungsten steel alloy, these drill bits offer superior durability and longevity for tough masonry tasks. Easy waste removal: The double-flute design makes waste removal easy, improving drilling efficiency. Versatile size options: Available in various sizes ranging from 5 mm to 16 mm, these drill bits meet a variety of drilling needs. Efficiently designed with a cross-type point and double spiral, these drill bits ensure efficient drilling and smooth cuts. Long-lasting performance: With four cutting edges, these drill bits promise a long life and consistent performance in tough materials. Wide application: Ideal for drilling clinker, concrete, brick, natural or artificial stone, these drill bits are versatile.