Electronic cigarette + hookah combo kits, also called MTL/DTLCombo kits are devices that have 2 types of coils. One type is more closed with a tight draw and designed for use with nicotine salt and provides an electronic cigarette vaping experience. The second coil is more open and designed for use with regular e-liquids for a vaping experience similar to an electronic hookah.

See also: Electronic cigarette coils