Rotary tools are versatile handheld devices that use a rotating motion to perform various tasks. They can be equipped with different attachments, such as drill bits, sanding discs, and cutting wheels, making them useful for activities like drilling, grinding, and polishing. Common brands include Dremel and Makita, which offer a range of models for both hobbyists and professionals. These tools are popular in woodworking, metalworking, and crafting due to their precision and ease of use. They can operate at various speeds, allowing users to adjust the tool for specific tasks. Safety precautions, such as wearing goggles and masks, are recommended when using rotary tools.