On one of the This old house episodes Tom Silva went to a house
that needed to have the stair hand rail connected to the up-stairs knewl post. He used a tool that attached to his drill that activated a magnet that in turn turned screws that were inside the rail. This joined the rail to a curved piece at the post. My question is "What is the name of the tool and where can I obtain one. Thanks.
Ralph A. Rowden