The Bosch SG450 Drywall Screwgun features a compact, design for lighter weight and better tool balance. Its ergonomic contoured grip provides maximum comfort and minimal fatigue by evenly distributing gripping pressure. The Posi-Lok™ nose piece retains the depth setting when removed from the tool, eliminating time-consuming depth readjustment. It can be easily removed for getting into tight corners and when changing tips. The standard-equipment bit holder includes a very strong magnet for maximize control and is especially helpful when driving long screws.