12T Narrow Wide Guide Pulley Wheel for Rear Derailleur Use on Modern Mountain and Road Bicycle Drivetrains (Black)
12T Narrow Wide Rear Derailleur Guide Pulley Wheel Engineered for Stable Chain Line and Efficient Shifting (Golden)
MTB Road Bike Rear Derailleur Pulley Wheel 12T Narrow Wide with CNC Machined Metal Housing and Bearings (Black)
Rear Derailleur Pulley Wheel 12T Narrow Wide Featuring Sealed Bearings and Metal Construction for Bikes (Blue)
MTB And Road Bike Rear Derailleur Pulley 12T Narrow Wide For Improved Power Transfer And Drivetrain Response(Golden)
MTB And Road Bike Rear Derailleur Pulley 12T Narrow Wide For Improved Power Transfer And Drivetrain Response(Blue)
