Campagnolo Upper Insert Race  ( Headset Spare Part ).

1" Headset Spare Part. /  Chromed Steel..

To suit 1" Frame - Insert dia. 30.2 mm..

Inside dia.  - Approx 27.0 mm

Outside dia. - Approx.  41mm

Height - Approx.    15 mm                                                                                                              Ref. 79

Circa -  1980's Item.. ( Possibly Super Record Series Spare )..