Related BOWN Article: Bosch P2+R2 Combo Bit
The tip of Bosch's newly engineered P2+R2 fits a number-2 Phillips screw, while flat spots along the sides match a number-2 square drive screw.
The Phillips screws, used on everything from drywall to deck screws, and the nearly unstrippable square-drive screws are two of the most common fasteners.