The KNIPEX HZ163-101/9 Double Box-End Wrench Set is designed for precision and efficiency in fastening applications. This set includes a variety of sizes, allowing for compatibility with a wide range of fasteners. Made from high-quality chrome vanadium steel, these wrenches are built to withstand heavy use while resisting wear and corrosion. The design meets ISO standards, ensuring reliability and safety during operation. Ideal for both professional tradespeople and DIY enthusiasts, this double box-end wrench set is a must-have for any comprehensive tool collection.