UWell Crown Coils (atomiser heads) are available in three different resistances. Choose from 0.25ohm stainless steel, 0.5ohm stainless steel and 0.15ohm Ni200 coils with the latter being suitable for temperature control mode only. Each coil features 100% organic Japanese cotton wicking. Please ensure that you choose coils which are compatible with your device and which are appropriate for your preferred vaping style. The lower the resistance the greater the vapour production but higher resistances will conserve your juice!