So that bike has a sram braze on front derailleur.
What does braze on front derailleur mean.
Braze on some frames have a front derailleur mount integrated with the seat tube and do not require a clamp those are called braze on front derailleurs.
Band or braze on.
All that means is that there is a bracket on the frame to bolt the front derailleur to rather than having a clamp around the seat tube.
This avoids any clamp size issues but requires either a frame with the appropriate braze on or an adapter clamp that simulates a braze on derailleur tab.
There are really only two types of.
There are two types of road front mech mounting.
There are two band sizes 31 8mm or 34 9mm so check current model or frame manufacturer s recommendations.
There are really only two types of road front derailleur mount and the band clamp type is becoming less common as the braze on can be bolted up to fit anything.