Here's a list of RBAs
http://www.e-cigarette-forum.com/forum/reos-mods/377836-reo-compatible-rbas.html
Also, most small attys with a center-located post and OD of base smaller than 15mm can be drilled out or otherwise modified for bottom feeding.
I like the IGO-S with a drilled out center post.
http://www.e-cigarette-forum.com/forum/reos-mods/377836-reo-compatible-rbas.html
Also, most small attys with a center-located post and OD of base smaller than 15mm can be drilled out or otherwise modified for bottom feeding.
I like the IGO-S with a drilled out center post.