Purchased to use for printing carbon infused PLA. Worked a treat with no adjustments to slicer settings required.

Tried the 0.4mm nozzle from the pack and it cause the following issues1. Horrible bed adhesion, regardless of calibrations performed2. the tie-ins between perimeter and infill had lots of gaps throughout the entire print3. got cloggedI went back to the OE nozzle on the PRUSA MK3 and its back to normal. Just a warning to others.

Wanted to try nickel coated nozzles as they are supposedly less prone to PETG being electrostatically attracted to the nozzle (which makes it curl back up towards the nozzle instead of wanting to stick to the bed). So I ordered these, put them on with my usual brand of PETG, and it was like it was clogged from the first skirt. Did a full take apart clean reseat everything very carefully. Still extruding in bursts then nothing. Go back to some known good dry PLA, same thing, very insistent extrusion. Switch to my hardened steel nozzle set, instantly better extrusion in both materials.I might have just gotten one with a manufacturing defect, but I don't have the time to monkey around with testing the rest of the noozles in the set. Returning for refund.

Good quality nuzzles for my prusa mini!

To yourself a favor and stop buying cheap tips. I used the average micro camera and you can see it's well polished inside. I have been printing p e t g only with it and I could say it's much better than the budget tips I was getting. we'll try PLA and update this review but overall I'm super happy with the quality of these tips and overall build. Time will tell how well they will wear away but overall I feel good about them. Would recommend them for anyone looking for a small upgrade with big results.