Diablo's magnetic drive bit holders deliver ultimate performance and maximum durability in extending the drills 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.