Product: Bicycle Rear Derailleur Pulley Jockey Wheel
Brand:vxm
Size:8T/10T/11T/12T/13T/14T/15T/16T/17T
Structure:Ceramic Bearings
Material:7005 aluminum alloy
Color: Black Red BlueGreen
Fit for 4/5/6 MM roller screw axis
Apply for most of rear derailleur on the market, support 7/8/9/10 speed
Tips: Please choose the same size with the original pulley. If no totally same, choose the smaller type, never choose the bigger than original ones.