nexMESH Chill is constructed out of Kanthal A1 with a resistance of 0.15ohm and is best used between 60 and 80w nexMESH Turbo is counstructed out of Kanthal A1 with a resistance of 0.13ohm and is best used between 60 and 80w nexMESH Extreme is constructed out of Kanthal A1 with a resistance of 0.16ohm and is best used between 60 and 80w The micro weave design of the nexMESH coils also reduce spitback and hot spots. The nexMESH Line of coils are designed to be used in the Profile RDA, and the Profile M RTA, these may work in other tanks, please double check the sizes before purchasing. As the heating core, mesh plays an important role. Each tiny structure change matters. Just like a tailor-made suit that should fit perfectly on you, the mesh for the Profile 1.5, Profile RDTA and the new Profile M RTA was tried and tested again and again to get the best result. All changes were aiming at the same target, flavor production. To cater to more vapers, 5 options of mesh coil have been included: nexMESH CHILL, nexMESH TURBO, nexMESH EXTREME, nexMESH SUS316L, and nexMESH Clapton. Please note that the new mesh is not interchangeable with the original Profile RDA mesh in that it’s 1.4 times the area of the original one.