10-409 is a part of Stanley, a division of Stanley Black & Decker that focuses on tools, storage and other goods for the automotive industry. It is a chrome vanadium, non-sparking, round-end screwdriver with a 5/16-inch shank. It is particularly useful for automotive work where non-sparking tools are critical, and is designed to help reduce accidental injury due to slipping or flying shanks. The 10-409 is designed to provide maximum accuracy and performance, and is backed by a limited manufacturer's warranty.