Ski-Doo 860200580 Woody Executive Ski Carbide Executive Carbides - REV Gen4, XP, XR, XU Tundra, XS, XM 1/2" round preformed material swedged at each end to best fit ski contour fitted with 8" of 60 turning carbide(pack of 2) Performance trail riders are known to use this runner Provides proper balance with a studded track Pack of 2