Really good overall. If you want to build a cheap MTL RDA setup, get one. Vapes like a Kayfun Prime in squonk form. One of the air bars was demoulded hot, meaning the mould pin creating the air channel deformed it a little causing a much tighter fit than the others, so potentially QC is a bit sloppy on this side. Also had to clean off some flash, but nothing major in the ones I got. The inner bore of the drip tip, top cap and beauty rings also had unbroken edges, nothing sharp on the outside though. Be prepared to spend a minute with a sharp knife and sandpaper if you're picky.