An impact wrench is a powerful tool designed to deliver high torque output with minimal effort. It is commonly used in automotive repair, construction, and assembly tasks to quickly loosen or tighten bolts and nuts. The tool operates by using a hammering mechanism that generates rapid bursts of rotational force, making it effective for heavy-duty applications. Impact wrenches come in various types, including electric, pneumatic, and cordless models. Each type has its advantages, such as portability or consistent power supply. Users can choose the right impact wrench based on their specific needs, ensuring efficiency and ease in completing tasks.