Made from 420 High-carbon stainless Tier-1 steel Laser cut, never stamped Each rotor is individually heat-treated and double-disc parallel ground to assure perfect flatness Wave« design allows for lower operating temperatures at extreme conditions Wave« design is much lighter than a stock rotor For maximum braking performance and rotor longevity, Galfer recommends using Galfer brake pads with Galfer rotors.. BRAKE ROTOR DF707W5