Convert your ISO or ISO B rear hub to a Shimano Micro Spline compatible driveshell. This conversion kit is complete with axle, adjustment clamp, driveshell and all driveshell internals for a plug and play swap. Micro Spline Driveshell Instructions Compatible with Shimano Micro Spline cassettes; XTR, XT, and SLX Compatible with ISO 142x12mm and ISO B 148x12mm rear hubs. Stainless steel bearings.