Aokin 16 Pcs Extruder Nozzles 3D Printer Brass Nozzles for E3D V5 V6 0.2mm 0.3mm 0.4mm 0.5mm 0.6mm 0.8mm 1.0mm for 1.75mm Filament 3D Printer

They are nozzles not much else to say but they work

The best thing about them is that they are cheap! For a few paltry dollars, you can get get an entire set, nay, several sets, of nozzles for your E3D V6 compatible hotend. I have tried the 0.8mm nozzle thus far and it did require recallibration of my Prusa MK3S but turned out a decent print. I was curious as to how accurate the nozzle diameters were so I put them under a stereo microscope and took some pictures. I then used the 0.8mm nozzle diameter as reference to measure the rest of them. All were spot on except the 0.2mm one which varied in diameter between 0.16 and 0.20mm, but given that this is almost surely going to be unused by me, Im not sure I care. The insides dont have burrs but they are not super smooth either: you can see the grinding pattern in the attached picture. Worth a buy? Yes, especially given that a single 0.4mm E3D nozzle sells for $25 on this site (dont know why!).

The nozzles appear to be of decent quality, no visible machining defects, and the interior bores appear smooth on inspection. I dont have a microscope to examine closely, but I had no issue pushing an appropriate feeler through the nozzle, and felt no binding or restrictions. I did not read closely the description, and honestly have no use for the larger 1.0mm nozzles, and will probably never use the 0.8mm nozzles due to limitations of my machine, but the rest are fine.

They do just what theyre supposed to.

Received the product. Very quick shipping. Not fully tested, but thus far works OK.