The Bosch 9-piece hex key set brings a new level of flexibility and convenience to household mechanics and DIY assembly. Each key in this handy set is made of best-in-class S2 steel and has a nickel coating with a satin finish. This ensures top high rust resistance and long service life. For smooth operation and flexible slot manoeuvre, all keys have a ball end for 30-degree inclination, while the long-armed keys deliver greater torque and are optimal for working in tight spots. The 9 hex keys are kept conveniently together in a click-lock storage clip with angle stops for easy key extraction.