The 01204 part manufactured by Wiha International is a 3mm Hex wrench with an overall length of 128mm and a nickel plated finish. The tool is designed to be used in hexagon key or tap applications, allowing you to drive fastener heads of the same size with greater ease and accuracy. It is ergonomically designed to provide comfortable use and prevent slippage, due to its knurled handle. The nickel plating also provides greater corrosion resistance over time, adding to its durability and longevity.