The job gets done quicker when you have a Century Drill & Tool Star Screwdriver Bit. The screwdriver bit, made from premium S2 steel, offers an incredibly long tool life while driving common or mild steel screws or case hardened screws. Its versatile design fits multiple tip hand drivers and 1/4-in. hex holders for power driving applications. If you need versatility and durability, you need this steel bit! Screwdriver bit made from premium S2 steel for long tool life while driving common or mild steel screws or case hardened screws Fits multiple tip hand drivers and 1/4-in. hex holders for power driving applications 1-in. overall bit length 1/4-in. hex shank Always use a bit holder for power driving applications