The Shimano F01A finned Resin disc brakes pads are the stock pads included on XTR 985 Trail calipers. The finned back allows maximum heat dissipation and the resin compound delivers the best modulation and lowest noise. These fit both the XTR 985 Race and Trail calipers as well as several other Shimano calipers. Sold as a pair so order two sets for one bike.