Laser-cut double disc ground 420 high carbon stainless steel Direct-replacement brake rotors; do not require any extra parts, bolt on just like a stock brake disc Full-floating design rotors have an aluminum center carrier Improves brake lever feel and modulation Rotors cool as they rotate to lower brake operating temperatures Design is self-cleaning, removes water as it rotates Less tendency to warp Manufactured in Spain For maximum braking performance and rotor longevity, Galfer recommends using Galfer brake pads with Galfer rotors.. BRAKE ROTOR DF370W