This bicycle freewheel serves the SHIM NO HG structure and can only be uséd for the HG bicycle hub body, not for SRAM XD or MS (Micro spline). Structure: for SHIM NO HG (SHIM NO HyperGlide). If you uséd for SRAM shifting system, it can only be uséd for HG structure bicycle hub body, not for XD structure bicycle hub body !
