This premium hex key bit set from Century Drill & Tool features S2 steel construction for extended tool life and superior performance. The set includes seven commonly used SAE hex key sizes plus a magnetic bit holder for convenient power driving applications.

• Set includes hex sizes: 5/64", 3/32", 7/64", 1/8", 9/64", 5/32", and 3/16"
• Premium S2 steel construction for long tool life
• Includes magnetic bit holder for power drivers
• 1" insert bits fit multiple tip hand drivers
• Compatible with 1/4" hex holders for power driving
• Ideal for driving common steel, mild steel, and case-hardened screws

Tip: S2 steel provides excellent torque transfer and impact resistance for demanding fastening applications.