Diablo's magnetic drive bit holders deliver ultimate performance and maximum durability in extending the drill's reach in hard to access areas. A high-strength, permanent magnet provides a secure, anti-wobble grip when fastening screws and nuts into a variety of applications. Torque Resistant Design absorbs torque for less stress on the holder and the bit. This range is Impact Strong™, delivering increased shank stability and durability in cordless and corded impact and drill drivers.