Extra hard bits are hardened to 60-62 HRC for extended life. Made of high quality S2 tool steel for durability. Designed to handle tough torque applications. The tip is formed for proper fit. Use when driving heat-treated or case-hardened screws such as sheet metal, self-tapping or self-drilling.
Extra hard bits are hardened to 60-62 HRC for extended life. Made of high quality S2 tool steel for durability. Designed to handle tough torque applications. The tip is formed for proper fit. Use when driving heat-treated or case-hardened screws such as sheet metal, self-tapping or self-drilling.