Screwdriver bits are small, interchangeable tips designed to fit into a screwdriver handle. They come in various shapes and sizes to match different types of screws, such as Phillips, flathead, and Torx. This versatility allows users to easily switch bits for different tasks without needing multiple screwdrivers. These bits are typically made from durable materials like steel to withstand wear and tear. Many sets of screwdriver bits are available, often organized in a case for easy storage and access. Using the correct bit ensures a better fit, reducing the risk of damaging the screw or the surrounding material.