For riders looking for premium performance, Jagwire Pro Semi-Metallic pads feature a lightweight aluminum backing plate, reducing the weight by nearly 50%. The high- performance semi-metallic compound combines the low-noise and positive braking feel of a resin pad with the longevity and wet-weather performance of a metallic pad. WHEN TO USE: Perfect for road bikes, XC race, or any other bike where every gram counts.Compatibility: ShimanoXTR M9020, M9000, M987, M985; Deore XT M8100, M8000, M785; SLX M7100, M7000, M675, M666; Deore M6000, M615; Alfine S700; Road/CX RS785, R785, CX77, CX75, R517, R515, R317, R315RidereverCargo-D, ARC- E, ARC-S, ARC-U, Attack-E, Attack-U, MCX-2 (PM), MCX-1 (PM), MTN3"