E series compatable battery tube for CR2 lithium cell:
Below, the tube is coupled with an Aleph 2 head and McE2S-FT (flat top) tail cap. (3.125" long)
The flange on the tail of the tube allows for secure grip even with an oversized head like Aleph 3 below:
A lanyard hole in the flange:
In a lineup:
With a twistie CR2 Aleph style light:
