Features: - Semi-metallic brake pads with red copper fibers and Kevlar for better heat dissipation and wear resistance - Provides a sensitive and stable braking effect - 4 pairs of bicycle brake pads included - Provides smooth yet powerful braking with low noise - Excellent performance and stability in dry and wet conditions - Easy to use and extends the life of the pads - Compatible with a wide range of braking systems like m515 m355 m375 m395 m416 m446 m447 m475 m515 m525 m57 - Material: metal - Color: black - Size: 35x31mm