Brand: GOLDIX model: GOLDIX-RTX Material: Aluminum alloy 7075 Process: CNC machining Weight: See actual weighing Only applicable to SHIMANO 7100 8100 9200 series and RIRO partial series cranksets, not compatible with other series! Please confirm before purchasing. We are not responsible for any installation issues caused by model problems after placing the order! MATTERS NEEDING ATTENTION It is often encountered that the driver tooth disc purchase does not matchThe Japanese crank 1l0bcd 4 claw crank has gone through 3 generationsThere are differences, not universal,It is recommended that the rider purchase the tooth plate after determiningthe size,or contact customerservice consultation

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