Every high-quality, Galfer-patented WaveA(R) MTB Centerlock disc 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. Wave design comes from the Galfer motorcycle division and has been used across many disciplines at the highest level. Not compatible with Fulcrum AFS System.Wave A(R) design keeps brakes extremely cool in demanding conditionsMade with a proprietary blend of 420 virgin stainless steel with high carbon content that provides better memory and frictionLaser cut to reduce the stress of the steel during productionIncludes lockringPrecision made at the Galfer factory in Barcelona, Spain