11T 13T Bicycle Rear Derailleur Pulley Wheel Made from High-Strength Aluminum Alloy with Hollow Core Design for Weight Reduction and Performance (13T(11T(red))
Vilgftyiet 11T/13T Aluminum Alloy Bicycle Rear Derailleur Guide Wheel with Precision Bearings for 8–11-Speed Drivetrains, Black 13T(black)
Bicycle Rear Derailleur Guide Wheel, 11T/13T, Aluminum Alloy Bearing Gear, Smooth Shifting Reduced Friction, Lightweight Hollow Design for 8-11 Speed Drivetrain Cycling
Gettimore Bicycle Rear Derailleur Guide Wheel 11T 13T Aluminum Alloy Bearing Pulley for 8 9 10 11 Speed Drivetrain Blue
MTB 11T/13T Bicycle Rear Derailleur Jockey Wheel Ceramic Bearing Pulley UK