A number of varieties of replacement atomisers for bottom coil devices, including the Evod, Genitank, Aerotank and Protank tanks.
Simply unscrew the base of your current attachment, unscrew the existing atomiser and screw a new one in place to refreshen your vape.
There are 2 types available:
Kanger 1.5ohm resistance dual coil atomiser compatible with the Protank 3 and Genitank series. These have 4 small holes and are suitable for typical e-liquid mixes.
Kanger 1.8ohm resistance VOCC-T dual coil atomiser compatible with the Protank 3, Toptank, Aerotank and Genitank series. These have 2 larger holes and can be used with thicker e-liquid mixes.
Resistance relates to how easily electricity will flow through the attachment. Lower resistance attachments will use more energy and so provide a hotter vape at the expense of battery charge.