SHIMANO J04C METAL DISC BRAKE PADS SPECIFICATIONS: Stainless Steel Base Plate Aluminum Ice-Tech Cooling Fins Metallic Pad Material for maximum stopping power and long life One package contains pads, spring and retaining clip for one brake caliper. You will need to buy two pad sets for a whole bike. These are the direct replacement for F03C pads. J04C have a revised and improved fin orientation and pad formulation. COMPATIBLE WITH THESE SHIMANO BRAKE CALIPERS: XTR BR-M9000 XTR BR-M9020 XTR BR-M987 XTR BR-M985 XT BR-M8000 Deore XT BR-M785 SLX BR-M675 Deore BR-M615 BR-RS785