Eleaf EC Coil Head 0.5Pack of 5 genuine replacement atomizer heads in 0.5 Ohm resistance (other resistances available, see link below).These Eleaf EC coil heads are compatible with the Eleaf iJust 2 and the Eleaf Melo tank. They can also be used with the Aspire Atlantis and the Aspire Triton.0.3 Ohm - 30W-80W0.5 Ohm - 30W-100W0.15 Ohm Ni200 (only for use with temperature control devices)Use our internal page link for more Eleaf iJust coils.These coils consist of two vertically parallel heating wires and large wicking hole. The heating wires are 0.4 mm in diameter and create large amounts of vapour and the 100% organic cotton creates great flavourThe packaging has a scratch panel so you can check the authenticity on the manufacturer's website.DON'T USE THESE 0.5 SUB-OHM HEADS ON MODS/BATTERIES THAT CAN'T HANDLE THIS LOW LEVEL OF RESISTANCE.Resistance - Ohms/ΩThe main difference between a lower ohm coil versus a higher number is that less voltage is required for the lower ohm. The lower ohm coil is generally likely to heat faster, produce a warmer vapour and more of it.