Designed for use with Avid and Sram disc brakes for the best possible performance Available in sintered w/ steel backing plate, organic w/ steel backing plate and organic w/ aluminum backing plate 4 Avid XO Trail,Elixir-7 Trail,9 Trail / Sram Guide,R,RS,RSC Sintered Sram SteelUPC/EAN/GTIN: 710845760068