Shimano Claris FD-2403 Road 3×8 Speed Front Derailleur Clamp-On 28.6/31.8/34.9mm
1, Clamp-on 28.6mm: (Clamp 34.9mm with a 28.6mm adapter). 2, Clamp-on 31.8mm: (Clamp 34.9mm with a 31.8mm adapter). Moderate spring tension. Dishes moving chain efficiently from the small chainring to the large.