Jagwire Mountain Pro Extreme Sintered Disc Brake Pads for SRAM Guide RSC, RS, R, Avid Trail Compatible with SRAM Guide RSC, RS, R, Avid Trail Sintered compound provides maximum durability and consistency, especially in inclement weather Steel backing plate Backing Plate Material: Steel These disc brake pads fit a variety of SRAM and Avid brakes and offer industry leading brake compounds for consistent, confident performance.