people braze on bosses for center pull brakes too , to eliminate the center bolt piece .

Ie. the randonneuring crowd , emulating the French Constructeur Brevet , handmades..

opting for lightest tubesets for their frame builds

the nicer Dia compe and Mafac are popular with that set.

Pauls Racer Medums in New components ..

some, show bikes, the CNC squared off corners get hand polished and rounded ..