MEROCA Rear Derailleur Pulley 12T Aluminum Alloy Sealed Bearing Wheel for Mountain Road Bike

Aluminum Alloy Material: All aluminum alloy material, strong and resistant, riding more assured, the layer is anodized, effectively protecting the aluminum alloy body, anti corrosion and anti oxidation. Wear Resistance Bearing: The force is not easy to change shape, cold resistance, high temperature resistance, wear resistance and corrosion resistance, high efficiency, and more labor saving riding. Positive and Negative Tooth: rear derailleur pulley can reduce the lateral virtual position, which can shorten the shifting response time and improve the shifting performance to a certain extent. Item Type: Bike Rear Derailleur Pulley Product Material: Aluminum Alloy Product : 12T Product Application: 8Celsius9Celsius10Celsius11 Speed Weight: Approx. 15g Celsius 0.5oz