When installing a ground stud, what tool is designed with a pilot to center the brush around the drilled hole and is used for removing the primer coating?

The correct answer centers on the unique features of a stainless steel rotary brush, which is specifically designed to assist in the installation of a ground stud. This tool comes equipped with a pilot that helps to accurately center the brush around the drilled hole, ensuring precise cleaning and preparation of the surface. Its rotating bristles effectively remove the primer coating, which is crucial for ensuring a proper grounding connection and preventing corrosion at the point of contact.

Utilizing a stainless steel rotary brush not only facilitates efficient cleaning of the underlying surface but also minimizes the risk of damaging the surrounding material. This combination of centering capability and effective priming removal underscores why this tool is the best choice for the task at hand.