High grade steel hex key set with Wera's patented Hex-Plus profile. This enables 20% more torque to be applied without damaging & rounding out the socket screw. Often with a damaged screwhead these hex keys will undo the screw where others fail. Made from round bar with machined ends for a precision fit & extra strength. The thermoplastic sleeve makes these keys very comfortable during use, especially over long periods & in cold conditions. High corrosion protection due to the Black Laser surface treatment. Practical rubber clip keep the keys secure. Ball-end tip on long arm gives better access to restricted areas. Multi-coloured sleeves allow quick & easy selection of the required size.