180mm fixed-mount Galfer USA rotor for mountain biking. Every high-quality, Galfer-patented Wave® rotor is made from a proprietary mix of virgin high carbon 420 stainless steel, laser cut (never stamped), and double disc-parallel ground to assure perfect parallel flatness and heat-treated to each specific application. Seamlessly replaces stock rotor. Full instructions are provided along with any technical help needed! Precision made in our Galfer factory in Spain.