What tool is specifically used for removing broken bolts, studs, and screws?

The correct choice is specifically designed for the task of removing broken bolts, studs, and screws. A screw extractor functions by cutting a reverse thread into the broken fastener, allowing it to be grasped and turned out of the material. The extractor is often tapered, which helps it grip the broken piece securely as it is turned counterclockwise. This tool is invaluable in scenarios where traditional removal methods fail due to the fastener being stripped or broken.

In contrast, a screwdriver is primarily used for driving screws in or out, but it is not effective when it comes to extracting broken fasteners. A wrench serves to tighten or loosen nuts and bolts but does not have the capability to effectively remove broken pieces. Pliers can grasp and twist items but lack the specialized design needed for efficiently removing broken bolts or screws. Thus, the screw extractor is the most suitable tool for this specific task.