1 Rear Derailleur Wheel. Sealed steel bearing, waterproof and dustproof, super. Made of aluminum alloy and ceramics, light weight, stylish appearance and strong compatibility. Material: Aluminum alloy tooth/ceramic bearing.
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Pratical Rear Derailleur Pulley Ceramics Light Weight Sealed Steel Bearing
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Pratical Rear Derailleur Pulley Aluminum Alloy Ceramics Sealed Steel Bearing
