Performance Friction 0614.21 Carbon Metallic Brake Pads Carbon Metallic delivers more stopping power than any other brake pad Multi-layer Technology reduces noise by absorbing specific ranges of sound frequencies Less fade, less wear and less noise when tested against leading competitors Unique friction material outperforms ceramic and semi-metallic pads in noise and vibration tests Meets all environmental standards - including newly passed copper limitations Consistent pedal feel stop after stop - No mushy pedal, No fade