It says I need a 510 to 510 adapter. Ok. But, which one do I order... the open center post or the sealed center post? I'm not sure what those do. Help, please. 
510 to 510 adapter | extender
510 to 510 adapter | extender
Need help from former MFS (MyFreedomSmokes) customers
Has any found a supplier or company that has tobacco e-juice like or very similar to MFS Turbosmog, Tall Paul, or Red Luck?