A rotary tool is a handheld power tool with a rotating bit. It comprises a motor with a flexible shaft or a single unit with a rotary bit attached directly to the tool. Rotary tools with flexible shafts generally hang via a handle, and its various bits are inserted into the end of the shaft. A foot pedal is used to control the fairly high speed of the flexible shaft-based tool. The smaller, handheld units with no flexible shaft are heavier to hold and are less powerful. But handheld rotary tools are usually more compact, less expensive, and easier to use.
