The Horizon Arco Tank has two types of replacement coils; an A4 coil that is a 0.2 ohm resistance, parallel quadruple coil which can be run from 70W to 80W, and an A6 coil that is a 0.2 ohm resistance, triple vertical coil which can be run from 80W to 90W. The coils house organic cotton and a flax paper liquid guiding system, making them unique. Each pack contains 3 replacement coils.
- A4 Coil - 0.2ohm Parallel Quadruple Coil (Recommended 70W - 80W)
- A6 Coil - 0.2ohm Triple Vertical Coil (Recommended 80W - 90W)