The Bosch 2608590181 HEX-9 Multi Construction 5 piece Drill Bit Set is a robust and durable set suitable for working with most kinds of materials. With this set, you can process soft concrete, masonry, brick, cement asbestos, light building materials, multilayer materials, ceramics and tiles, wood, plastic, thin sheet metals and aluminium. The bits are wear-resistant thanks to their diamond-ground cutting edges and carbide blend. The 2-flute U-shape is perfectly suited for effective dust removal, and provides a standard working lifetime. These bits can be used with standard cordless drills and impact drives with 1/4-inch toolholder. Features: Carbide blend with diamond-ground cutting edges Stable drilling in all kinds of materials 2-flute U-shape for good dust removal.