bicycle rear derailleur
bicycle rear derailleur 1.different sizes 2.of high quality 3.competitive price
bicyce rear/ front derailleur
1.18/21 speed index rear derailleur long cage
2.installation:with bracket
3.total capacity;43T
4.meas:48*24*13cm
5.qty:50pairs/ctn
6.G.W:20kg N.W:19kg
bicycle rear derailleur