Replacement Atomizer Heads for the Uwell Valyrian tank.The Uwell Valyrian Coils are known for their fantastic flavour and cloud production, even at lower wattages. The wicking material is made with the highest pharmaceutical grade cotton, while the coil itself is wound from kanthal which ensures no overheating issues (even if you maxed the wattage at 120!).Pack of 2.These coils are only designed to be used with the Uwell Valyrian Tank!Coils with a resistance less than 1ohm are known as Sub Ohm coils. These coils require a lot of power and heat up very quickly. To make sure your E Liquid doesn’t vaporise too fast leading to burned coils, we recommend using a thicker High VG E Liquid like our 70/30 E Liquids (70% VG to 30% PG).Uwell Valyrian A1 0.15Ω Coil– Recommended 95-120wUwell Valyrian UN2 Meshed 0.18Ω Coil– Recommended 90-100wIf you want to know more about E Liquid mixes and ratios, have a look at our E Liquid Guide. To learn more about coils and resistances, our Vape Coil Guide has all the information you need.