These disc brake pads fit a variety of brakes and offer industry leading brake compounds for consistent, confident performance. FEATURES: Low noise, high performance semi-metallic compound lasts longer than resin Steel backing plate SPECS: Hayes Stroker/Ryde: Pad shape number: 07 Compatible with Hayes Dyno, Stroker Ryde Tektro IO: Pad shape number: 30 Compatible with Tektro IO Tektro Lyra: Pad shape number: 31 Compatible with Tektro Lyra Magura MT Sport: Pad shape number: 10 Compatible with Magura MT8, MT6, MT4, MT2 Magura Louise: Pad shape number: 13 Compatible with Magura Clara 2000, Louise 1999-2001 Magura Marta SL: Pad shape number: 11 Compatible with Magura Marta 2002-2008, Marta SL Magura Louise 2007: Pad shape number: 12 Compatible with Magura Louise 2007, Louise HP Tektro Auriga: Pad shape number: 28 Compatible with Tektro Volans, Auriga Twin, Auriga SUB, Auriga E-SUB, TRP Parabox 2011 Rear SRAM Hydro Road: Pad shape number: 37 Compatible with SRAM Road Hydraulic Red, Force, Rival, CX1, S700 SRAM Guide Pad Shape Number: 58 Compatible with SRAM Guide RSC, RS, R, Avid Trail Formula R, T, C Pad Shape Number: 16 Compatible with Formula Formula C1, CR3, Cura, Mega, R1/R1R, RO/ROR, RX, and T1