The lure is that they are cheap. As with anything cheap, you'll pay later for wasted time changing nozzles by the dozen, wondering why you're not getting a decent print, damaged parts, etc. They look different than the original E3D nozzles, they are wider and some nozzles have scuff marks on the tip. Being wider they will mess up the E3D silicone socks (they work for a while and then randomly push them into the print, causing them to be pulled until they tear apart and of course destroy the print).
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