XDR: for SRAM 11-12S. HG: For Shimano 8-11s, SRAM 8-11s. Bearing model: 6802. Limit torque: ≥ 400NM. Core: HG/XDR. Rear wheel: 142X12mm. Surface hardness: ≥ HV2000. Center hardness: ≥ HRC55.
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