Build quality is fantastic,smooth buttery threads, no sharp edges. Spotless clean, no machine lube I could detect. Fit & finish fits with the rest in very well done category. PBsardo mentions slight wobble on authentic JFC, this one has none. A total of 9 options are available for air flow plus nicely tensioned adjustable controller on the atomizer which will pretty much close down completely. Glass tank which holds a little over 3ml. Spare o-rings, post screws, and a tool to remove air disks (two included) stainless and black POM drip tips are all found in the cardboard box. SS316, and PEEK insulators/air disks. Available options include spare glass, 8 additional air disks, Ultem DT. Coil placement and wicking is very easy, with good sized post holes, no issues with wire trapping or cutting. Airflow tight mtl to nice slightly restricted lung. Flavor is top notch, fairly easy to use top fill is dropper friendly which is a big plus for me. I do not an authentic to compare, but Coppervape is known to source them for copying. From casual visual comparison everything appears accurate. In the air disk photo the two on far right are included.