Nowadays protective coatings are identified as a fundamental key to guarantee strong mechanical resistance, high hardness and high wear resistance for the coated components. As a consequence, continuous research is conducted to find innovative coating solutions with improved performances. To this aim, we report about the sputtering deposition of different multilayer structures made of zirconium and titanium nitrides layers (ZrN/TiN) on WC-Co substrates and milling tools, demonstrating an increased tool lifetime of about 30%