Multi Construction Drill Bits Suitable for drilling in most materials such as masonry, brick, light building materials, multi-layer materials, ceramics and tiles, wood, plastic, an metals Centring tip for a precise drilling start and good guidance in the drilled hole Diamond ground cutting edges enables multi-purpose drilling 4 Flute reinforced core section for better wear resistance and stability when drilling in concrete, Weight: 1.36466140178 pounds, Manufacturer: Bosch