11T13T Rear Derailleur Guide Wheel Compatible with 4 5 6mm Screw Hole Diameter

11T 13T Steel Bearing Bicycle Derailleur Pulley Wheel for Mountain Bike Parts

Aluminum Alloy 11T 13T Rear Derailleur Pulley for Improved Ride Experience

11T 13T Bicycle Derailleur Pulley Wheel Steel Bearing Guide Compatible with MTB

Aluminum Alloy Bicycle Derailleur Pulley 10T 12T for MTB and Road Bikes

11-17T Wheel MTB Ceramic Bearing-Pulley Road Bike/Bicycle Rear Derailleur

Bicycle Guide Wheel Derailleur Pulley Bearing Steel Precision Bearings