This is a OEM part great quality grommet for your wire harness.
This has multiple function, this part can be used for
Beetle sedan and Conv. Taillight Harness 1953-1977 thru Quarter panel
and on Fender (4 pcs per car required). Also for
Stoplight Harness thru Front Luggage Floor 1953-1967.
Ghia headlight bucket wire harness 1960-1969.
This part has ID 4mm X 16.5mm OD, this sold as each.