These disc brake pads fit a variety of brakes and offer industry leading brake compounds for consistent, confident performance. Box/25 Pair. Compatible with XTR M985, M988, Deore XT M785, SLX M666, M675, Deore M615, Alfine S700, Non-Series CX77, R515, R517. Low noise, high performance semi-metallic compound lasts longer than resin. Steel backing plate. Item Specifications: Compound: Semi-Metallic, Heat Sink: No, Pad Shape Number: 19, Backing Plate Material: Steel,