Derailleur System (113)

Option 1, 34.9mm(FD-M310)  2, 31.8mm(FD-M310)(34.9mm with adapter)  3, 34.9mm(FD-M313)  4, 31.8mm(FD-M313)(34.9mm with adapter)  —————————————————————————— Model: FD-M310 (Top swing) Level: Altus Speed: 3×7/8 Speed Compatible chain: HG 8/7/6-speed Clamp Band size:...