Fully hardened and tempered for extended bit life under constant heavy duty use. The tip is formed for proper fit. Bosch insert bits are designed to handle tough torque applications. The combination of highest quality S2 tool steel and a proven sub-zero tempering process gives these bits long life and increased durability.
- Bosch reinforced screwdriver bits are designed to handle tough torque applications
- Made of the highest quality S2 tool steel for durability
- Bosch offers premium quality power bits, insert bits, bit holders and nut setters for use in all drill/drivers and power screwdrivers
- Extra hard bits are hardened to 60-62 HRC for extended life