11T 13T Bike Ceramic Pulley Aluminum Alloy Rear Derailleur Bearing Jockey Wheel

Features: 7075 High strength aluminum，ceramic pulley Selection rules:please try your best to choose the same as the original regulating wheel. You can choose smaller than the original regulating wheel, but not bigger Specifications: Size:11T 13T Type：pulley Structure:ceramic bearings Material:aluminum alloy Diameter:11T--41mm; 13T--49mm Fit for 4/5/6 MM roller screw axis Package include:1pc pulley

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