The SwissStop Disc 35 RS Disc Brake Pads offer a highly balanced combination of predictable braking, durability and incredibly low noise in all conditions. The organic compound gives smooth modulation and is rotor friendly. Compound Choices Endurance compound - Based around the class leading SwissStop Organic pad, but tweaked for applications requiring greater endurance. Ideal for E-Bikes. This is a long lasting, high endurance pad compound. Organic formula is low noise and rotor friendly. RS compound - Race ready, silent power. Swissstop RS disc pads offer a highly balanced combination of predictable braking, durability and incredibly low noise in all conditions. The organic compound gives smooth modulation and is rotor friendly. EXOtherm 2 - These pads combine an extremely durable, smooth modulating pad compound with a cooling fin equipped back plate which provides consistent, powerful braking in all conditions. High quality springs are supplied with every set of Swissstop disc brake pads Supplied as pairs (for one wheel). Fits: SRAM Red eTap AXS (Gen. 2 'Two-Piece' calliper), Force eTap AXS, Level Ultimate, TLM B1 (2020+)