Similar to a tank, these contain wires and coils, however, you can make the coil yourself by wrapping the wire and adding cotton. This is more appealing to vapers that what to go to a more advanced level of vaping as the user will require knowledge about rebuilding and coil safety. Available in many forms; RDA (Rebuildable Dripping Atomiser), RSA (Rebuildable Squonk Atomiser), RDTA (Rebuildable Dripping Tank Atomiser), RTA (Rebuildable Tank Atomiser).