Impact drivers are powerful tools designed to drive screws and fasteners with high torque. They use a combination of rotational motion and concussive blows to efficiently insert screws into tough materials like wood and metal. This makes them ideal for construction and DIY projects where speed and strength are essential. Unlike traditional drills, impact drivers have a unique mechanism that allows them to deliver bursts of power without straining the user. They typically use hex-shank bits, making it easy to change attachments quickly. Popular brands include DeWalt, Makita, and Milwaukee, known for their reliability and performance in various applications.