This Heller ProStone masonry drill has a diameter of 12.0 mm and is suitable for materials such as masonry, clinker, aerated concrete, natural stone, and lime sandstone. The drill is 150 mm long with a working length of 90 mm. The ProStone masonry drill bores quickly, effectively, and reliably into stones, making it very suitable for use in cordless drills. The 4-way spiral efficiently transports drill dust away. The use of a robust carbide plate ensures a long lifespan. This masonry drill can also be used for hammer drilling, although the Heller ProXtreme concrete and natural stone drills are better suited for that purpose. The drill features a round shank, making it compatible with quick-change or keyless chucks.