An optimum compound containing a variety of materials produces outstanding braking performance with minimum effort at the brake lever. Swissstop disc pads offer excellent performance in wet and dry conditions and are extremely durableHigh quality springs are supplied with every set of Swissstop disc brake padsSupplied as pairs (for one wheel).D6 - Shimano XT M755, Gremeca System 8, Sram, Hope Mono,Tech M4D11 - Formula B, Racing XC, Extreme FR, DR, BR Team, Pro, SLD15 - Shimano Deore 525 Hydraulic / 515 MechanicalD16 - Shimano XTR965/966/975 XT765/775 LX585 Saint/Hone/SLX665D19 - Hayes Sole, MX3 Mechanical, CX5, Quad QHD-4,5,SPD21 - Magura Marta 2009, Louise 2007/08, Bat, Brake Force OneD26 - Avid Elixir 9,7,5,3,1,CR,R, SRAM XX, XO, DB 5,3,1D31 - Avid XO Trail, Elixir Trail 9&7, SRAM Guide Ult ,RSC,RS,R