This is a legit dragon hotend. I was kinda sketched out at first, but I'm pretty sure that's related to Slice enforcing the mosquito patent against cloners. I understand that cloners are bad and all, but most folks just can't justify spending $200 on a hotend to put on a $200 printer.. I purchased the high flow variant, and it works extremely well for large nozzle/fast printing and dumping a lot of thermal energy into filament in a short amount of time. If you plan to print w/ mostly 0.2-0.5mm nozzles at <0.3mm layer height, DO NOT BUY THE HIGH FLOW VERSION. I have experienced several clogs relating to heat creep, I believe because I did not have filament going through fast enough and the excess heat creeping up the melting zone. When I swapped in the non-high flow heat break/heat sink, it resolved my clogging issues. don't overestimate your flow reqs; All in all this hotend has most of the attractive features of the mosquito for half the price, and that's hard to beat.