Pre-drill, countersink or counterbore, and then flip the tool insert to drive screws without re-chucking Change from drilling to driving functions fast and easy Patented on-board hex key for bit changes and tool modularity Unique metal application insert with drill stop and hex head/nut driver Magnetic bit tip for strong fastener retention Extremely convenient, versatile, and easy-to-use drill/driver accessory For use in wood, plastic, and metal Works with most drill/drivers and quick-change connectors