Both of the Davide tanks are basically the same except the aspire bdc version comes with the adaptor ring and a grommet for the chimney.There are two types, the anyvape davide, and the aspire davide. Plus there is a protank aspire adaptor, that might fit. Not bought one yet, so don't know. But someone else might.
Both of the Davide tanks are basically the same except the aspire bdc version comes with the adaptor ring and a grommet for the chimney.
If you remove the adaptor and grommet you can then use your old protank heads in them.