Just semi shitty screws, but usable. Other than that fine. I have 3 or 4 different brands of clones, other than color can't tell them apart. Vape is fantastic imo, why I always go to em. Wouldn't think the vape would be any less than your authentic, but can't say for sure. Only thing I have noticed is when I put the extention in both of my black ones they leak a bit. Not bad, but there. I have taken an extension from a SS working fine, put it in a black, and leaks. No idea what's up with that. Never any leaking with SS or blue. Could be the black ones are YTFK, but not sure.