Every high-quality Galfer-patented Wave(R) rotor is made from a proprietary mix of virgin high carbon 420 stainless steel laser cut (never stamped) double disc-parallel ground to assure perfect parallel flatness and heat treated to each specific application. Precision made in the Galfer factory in Spain. - Rotors are designed to provide a greater resistance for reliable braking - 2.0mm thickness and Joint Geometry offers greater rigidity and thermal stability - *Please confirm that your disc brake caliper is compatible with 2.0mm thick rotors