Very rare, very early first generation Shimano Dura-Ace #H-731 / #H-831 (#HA-100) quick release set, front and rear Skewer for 100 / 120 mm from the 1970s sales BSA (68mm)

BSA (68mm)

Note the cincave bearing cups

368 gr/pair

4mm x 24TPI (English/ISO/Italian)Fork Crown Race / Gabelkonus :26

Very rare, very early first generation Shimano Dura-Ace #H-731 / #H-831 (#HA-100) quick release set, front and rear Skewer for 100 / 120 mm from the 1970s sales BSA (68mm)Very rare, very early first generation Shimano Dura Ace #H 731 #H 831 (#HA 100) quick release set, front and rear Skewer for 100 120 mm from the 1970s Schnellspanner Weight Gewicht : 191 g For hubs with spacing in Fr Naben der Einbaubreite : ~100mm & ~120mm Condition Zustand : See pictures Siehe Bilder Production period Produktionszeitraum : 1970 ~ 1975 Note Bemerkung: Has been used for the very first generation Shimano Dura Ace #H 731 & #H 831 (#HA