An angle grinder is a versatile power tool used for cutting, grinding, and polishing various materials, including metal, stone, and concrete. It features a rotating disc that can be swapped out depending on the task, making it suitable for both professional and DIY projects. Angle grinders are commonly used in construction, metalworking, and automotive repair. These tools are typically powered by electricity or batteries, providing portability and ease of use. Safety precautions, such as wearing protective gear like goggles and gloves, are essential when operating an angle grinder to prevent injuries from sparks and debris.