A pneumatic die grinder is a handheld tool powered by compressed air, designed for grinding, polishing, and shaping materials like metal and plastic. It uses various attachments, such as grinding stones and sanding discs, to perform tasks with precision. The tool is lightweight and easy to maneuver, making it ideal for detailed work in tight spaces. These grinders are commonly used in automotive, metalworking, and woodworking industries. They offer high-speed operation and can achieve fine finishes, making them essential for tasks like deburring and surface preparation. Proper safety gear, such as goggles and gloves, is recommended when using a pneumatic die grinder.