Cordless hammer drills spin their bits and vibrate them at high speed and low impact to drill small-diameter holes in asphalt, brick, cinder block, tile, and light concrete. This hammer-and-rotate action cuts holes in masonry more cleanly and easily than drilling alone. Also known as hammer drill drivers, they have a rotate-only mode to drill wood, metal, plastic, and other non-concrete materials. They are used in applications that require more power than a standard drill but don't require the large-diameter bits and heavy impact of rotary or demolition hammers. These cordless hammer drills operate in areas without access to wired power, eliminate the tripping hazard of a cord, and run on brand-specific batteries.