Ego 510 Adapter
Say you want to put a CE4 on a mech mod, this is your baby. <– Just a little vaping humor.
These are handy if you want to put an ego-style clearomizer on to a mod/battery that has ONLY a 510 connection, like a Provari, or an ITaste VV/VW 3.0 510 battery. Great for testing a clearo if your ego battery isn’t handy.