6 V -> 12 V special starter ring for Volkswagen Beetle& Combi ->66

Starter motor ring to switch from 6 volts to 12 volts when installing a 12 volt starter motor on a vehicle equipped with 6 volt circuit.
For:
- Beetle, Karmann-Ghia, 181 & Type 3->1966
- Combi Split 1950 ->07/1967
with original 109-tooth engine flywheel
and 29 mm starter motor pinion. Outside diameter: 16 mm
Inner diameter: 11 mm
Width: 14 mm