I'm guessing the sometimes used 1 and 1/8 and 1 and 3/8 correspond to the 32mm and 35 mm clamps for front derailleurs on Cdales? Anyway, looks like I should be looking for a 32 or 1-1/8 clamp for my bike?divve said:seatpost: 27.2mm
BB: English
FD: 31.8mm clamp, but 32mm Campy fits