Diablo's hi-performance screw driving set delivers extreme durability and longer life in the installation and removal of fasteners. The included drive bits have an optimized tip design to provide a strong， precise grip that reduces wear， stripping and slippage. The magnetic nut setters and drive bit holder are designed with a high-strength， permanent magnet for a secure， anti-wobble grip when fastening screws and nuts. Torque resistant Design absorbs torque for less stress at the tip. This set is Impact Strong， delivering increased shank stability and durability in cordless and corded impact and drill drivers.