I was hoping to find the single coil of this atomizer but alas... Building was a bit fiddly. Screws and threading were good, but the layout was tight and the coils always seem close to touching at either end. However, once they're in, the vaping experience is fantastic. Great flavor and dense clouds. The aluminum topcap is light and dissipates heat quickly. Airy but not too much and easy to dial back for a nice semi-restrictive pull. One bit of warning - don't use the included coils. Ohms out to .05 dual. I used my own for a .2 build instead. Next time I might use simple round wire or a 2.5mm coil to make it easier to build.