Meroca Road Bike Rear Derailleur Ceramic Bearing 16T Pulley Guide Wheel 5800 6800 R8050 R8000 R9100 9000 4700 5700 105

Body: aluminum 7075

Pulley: 16T full ceramic pulley

Weight: 78-90g

Model 8700RD: fit for 4600/4700/5700/5800/6600/105

Model 8800RD: fit for 6800/6870/6770/9000/9070

Model R8000: fit for R8000/R8050/9100/9150/9170