Ultra-light and high-performance brake pads have strong water-resistance properties. pair Bike Disc Brake Pads. for-SRAM R 2011+ Guide RE. Made of high quality material, and practical to use. Anti-scrub copper fiber wire: choose copper fiber, the performance in the actual braking process is better than adding brass powder or iron fiber, more anti-wear, better heat dissipation performance, low thermal attenuation.