510 extender / adapter - 6.4mm shoulder length
Use this on any 510 threaded device to raise the connection. Some mods have recessed atomizer connections, and these extenders will allow you to use tanks and cartos that wouldn't normally fit. For example, the Ovale VV mod needs these in order to use a DCT or other tank.
There are many uses, and these adapters can even be stacked for a 13mm extension.
Price is for ONE adapter.