Meijun 18T Bicycle Rear Derailleur Ceramic Bearing 4Mm 5Mm(Red)

All the results of the simulations and the experimentations indicated that the ceramic ball bearings' performances are very good, especially in the low load and high-speed environment. Size:18T Structure: Ceramic bearing Fit for 4/5/6 MM roller screw axis Apply for most of rear derailleur on the market Colour: red Material: Aluminum alloy Size: 72mm diameter Package Contents: 1 x Bicycle Rear Derailleur Only the above package content, other products are not included. Note: Light shooting and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.

What's in the box
1 x Bicycle Rear Derailleur