The VOOPOO Finic YC Coils come with a traditional design for an exquisite structure to deliver excellent coil lifespan. Promising dense clouds of vapor with maximum flavour. You can choose between Direct to Lung (Sub Ohm) or Mouth to Lung (Plus Ohm) simply by choosing the right coil, which allows you to use any mix of E Liquids!Pack of 5.These coils will work with the following devices:– VOOPOO Finic 16– Finic 20 AIOCoils 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).Coils with a resistance above 1ohm are known as Plus Ohm coils. These coils don’t require as much power to heat up and don’t get as hot as their Sub Ohm cousins. Because of this, thinner E Liquid is used so the coil doesn’t get clogged up too quickly. We recommend using a thinner High PG E Liquid like our 50/50 E Liquid (50% VG to 50% PG).VOOPOO Finic YC-C 1.6Ω Coils– Recommended 6-10WVOOPOO Finic YC-R1 0.6Ω Coils– Recommended 16-25WVOOPOO Finic YC-R2 1.2Ω Coils– Recommended 8-12WIf 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.