Bosch provides a wide range of quality screwdriver bits, nutsetters and fastening accessories designed to meet the toughest conditions. Bosch has a heritage of innovation that includes P2R2 bits to fit square and Phillips heads, plus no-round nutsetters and the new Impact Tough lineup. These bits are fully hardened and tempered for extended bit life under constant heavy-duty use. The tip is precision formed for proper fit. Use when driving heat-treated or case-hardened screws such as sheet metal, self-tapping or self-drilling.