I included this photo, because a 7-wrap 26g K coil build is the easiest, safest, and quickest way to build a coil and vape. It is also the single most recommended coil for people new to building their own coils. The RDA below is a Doge RDA from Much. The post holes are huge, however this particular atty does not leave much room on its inside for advanced coils. For the coil in the picture, however, the Doge is awesome.