The original by Fat Daddy directly from the USA.
Here the version 1, the classic among the Fat Daddy Vapes connectors
With version 1, it is also possible to repair your own and purchased battery carriers.
Simply remove the old connection and drill the existing 8 mm hole to 8.5 mm. Then use a tap to expand to M10 x 1.5 or simply drill to 9.5 mm and fasten with the enclosed brass nut.