The Southwire ND6N1HD 6-in-1 Heavy Duty Nut Driver Multi tool is a versatile hand tool designed for quick and easy nut driving. With a drive type of hex and a system of measurement in standard (SAE), this tool covers sizes ranging from 3/16" to 9/16". Made by the trusted brand Southwire, this heavy-duty nut driver is a durable and reliable addition to any workshop or tool collection. Perfect for professional use or DIY projects, this multi-tool offers convenience and efficiency in one compact design.