General description High performance, low noise semi-metallic compound mounted on a steel backing plate. Made of resin semi-metallic material for better heat dissipation and ultimate braking power. These brake pads offer 2 times longer life than normal disc brake pads. Technical specifications Material: Resin Color: Black Package Contents: 12 Pairs x Bicycle Disc Brake Pads Measurement allowed error: +/- 1-3 cm