Vape coils are used in tanks, each one is fitted with a wrapped wire and a cotton wick, to soak up and heat up E-Lliquid into vapour. There are MTL coils that produce discrete levels of vapour and are much tighter on the inhale, DTL coils also known as sub ohm coils feature a loose open draw and huge vapour clouds, perfect for lower nicotine E-Liquids
