Wiha special chrome-vanadium-molybdenum tool steel. Through hardened for best wear resistance. Corrosion protective Hard Chrome Finish. Exact Fit Precision Machined Tips. Torx is a 100% improvement in drive performance over other systems. Virtually eliminates screw head cam-out. Precision Handle is made of high Quality cadmium free Plastic. ESD-Safe Dissipative Material. Molded on handle for permanent bond to Blade.