Cordless rotary hammers drill and chisel concrete and masonry, creating holes and delivering high-impact, low-frequency blows. Also known as SDS drills and combination hammers, they have a hammer-and-rotate mode that spins and thrusts the bit to drill larger-diameter holes in harder materials than hammer drills. Their hammer-only mode chisels and chips for light demolition. A hammer's solid bit capacity is the maximum hole size it drills, but selecting a hammer by its optimal drilling range ensures that the tool will produce consistent results for hole sizes within that range. Rotary hammers are commonly used to drill through-holes, set anchors, and remove bricks. These cordless tools operate in areas without access to wired power, eliminate the tripping hazard of a cord, and run on brand-specific batteries.