Kool-Stop organic disc brake pads designed to be rotor friendly and even performing through the life of the pad42Sram Apex 1, CX1, Force 1, Force 22, Rival 1, Rival 22, Red 22, Red eTap HRD 11s, Red AXS HRD (1st Gen 1pc Caliper), S700, S900 HRD, Level TLM, Level UltimateOrganicStandardKool-StopAluminum