There are two types of Smoke51: the
DUO and the
TRIO. The trio is
three-piece and I'm not entirely sure what model it is. I see that it has an exposed bridge atomizer, which rules out the ubiquitous RN4081. Perhaps it is the DSE103 (which also is 103mm long). I discuss it and suppliers for it on
this page of the WWV
Version 2.
Assuming that it is the
two-piece cartomizer-based Smoke51 DUO, it's the E9 model. Other E9 brands are Green Smoke (not to be confused with GreenCig), Vapure, KR808D-2, Red Dragon, Loong Totem, and ePuffer.
LeCig is a good source for relatively inexpensive replacement parts (
batteries and
cartomizers). It is their "D-2" model.
The E9 is not compatible with the Kr8 (which is much more popular here on ECF).