The rotary power drill is one of the most basic tools for electricians. However, there are times when standard rotary models can't get the job done as efficiently as specialized drilling tools, and for drilling hard materials, a hammer drill is often the best tool choice. A hammer drill is two tools in one—a conventional rotary drill for working in wood and soft materials and a hammer drill for drilling masonry, cinder blocks, concrete, metal and hard materials. Change from one mode to the other instantly with the flip of a switch.
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