These are the latest upgraded V2 style replacement atomizer heads from KangerTech which feature pure organic Japanese cotton wicks and a stainless steel body.  

This latest revision of the SSOCC coils from Kanger feature a larger diameter, and additional e-juice hole from improved wicking and reduced leaking.  The SSOCC coils ship with the new TopTank series of tanks from Kanger, but are backward compatible with the SubTank line as well.  

The new design is smaller that the original square style giving you slightly more juice capacity than the original square design.  

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