About this item 

• Built for maximum durability and long life with impact drivers 
• ensures both ends of bit lock securely in impact drivers and quick-change chucks, enabling use of a single bit 
• Manufactured with M2 high speed steel and extra-hardened for maximum durability and long life with impact drivers 
• Tip of drill end is designed to start fast with minimal walking and tip of extractor end is serrated for increased torque 
• Manufactured with heavy-duty, cold-forged, high-grade steel to withstand high torque output