Replacement Coil Description The Sense Blazer Nano Replacement Coils are for the Sense Blazer Nano Tank. There are two variants in the series that are both rated for 15 to 40 watts. The first is a 1.2-ohm triple kanthal coil. The second is a 1.8-ohm ceramic coil, which uses a ceramic element to help assist with coil longevity and overall life. Features And Specifications: Japanese Organic Cotton Vertical Coil Orientation Auxiliary Wicking Slots Includes five (5) replacement coil heads.