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For attaching the rear derailleur to the frame dropout Designed for precise positioning of the rear derailleur body Compatible with the Shimano rear derailleur design of the RD-M8250 series Construction designed to replace defective B-axis units
For attaching the rear derailleur to the frame dropout Designed for precise positioning of the rear derailleur body Compatible with the Shimano rear derailleur design of the RD-M8250 series Construction designed to replace defective B-axis units