Mudder 5 Pieces Hardened Steel Nozzle 0.4 Mm/ 1.75 mm 3D Printer Mk8 Nozzles High Temperature Wear Resistant Compatible with Ender 3/ Ender3 Pro, Prusa I3, Makerbot Creality Cr-10 All Metal Hotend

I got these for my ender 3 S1 pro, I run a glass bed also, I was experimenting with carbon fiber and wood pla, which requires a hardened steel nozzle, they work great, made great, and I use them for all types of PLA no matter if it's abrasive or not, a cheap upgrade that will save you in the future

Great nozzles, had good success with them

Was a little worried with some of the reviews about the nozzle tip sizes being inconsistent. My pack of tips came with a sticker to verify their authenticity, no issues they’re they are all uniform. Ran it through about 4 hours of printing no issues. I’m very pleased with the quality of the prints. The only weird thing is that it’s not flat on all sides like the factory tips so you’ll have to carefully use a set of pliers to install these steel tips. So far so good no complaints, definitely worth the $

I noticed reviews stating that there were manufacturing burrs that caused clogs and that the nozzles were not 0.4. I believe that the latter complaint refers to the drawing in one of the photos showing the OUTSIDE of the nozzle diameter was 0.4. This is a marketing mistake. I gauged all 10 of these and they are dead on the money! I also under magnification looked for burrs and found none. Out of an abundance of caution I used the other end of the cleaning needle to move up and down the bore in case magnification missed something and saw nothing. They are clean. Looking forward to starting to print some material enhanced filaments with this. In the grand scheme of things (the cost of building a printer and buying filaments) this is a great value.UPDATE: Now that I have quite a few prints under my belt using these awesome nozzles (using regular PLA, Performance PLA, PLA Wood, and PLA PRO+ (Hatchbox), I am not sure I want to go back to cheap brass nozzles. I have printed small precision parts and larger parts sliced with Prusa Slicer 2.5.0 for Mac and have nothing but Kudos for these. No clogging, no jams, and no adverse behavior at all. If I could give this 5 stars + I would. Hope this helps dispel the myths other users have experienced. I would buy them again when I need them or even stock up on some in an additional size.

I was able to print PETG filament perfectly from these with my ender 3 printer and a lot were included. Very satisfied with my purchase. Will be ordering these again. I may just not clean them at all and swap out everytime I print for a smooth guaranteed print.

I’ve printed about 1.5kg of high temp carbon pla blend (very abrasive), 1kg of Glow (slightly abrasive), and probably near 4-5kg of regular old PLA and it still looks/functions like brand new. They are a direct replacement for the stock ender nozzle.Some people complain about quality control, so maybe I lucked out, but I’m also going to order another 5 just to have on hand and see. I also did NOT have to adjust any hot end temps as some have mentioned, again maybe I’m just lucky, but all in all I really like these nozzles. I Have had very bad experience with some other brands that printed fine for a day and then just clogged and jammed and clogged and jammed but these have been mint! Was skeptical due to the low price, but like w many brand name items, half the cost is just the name.

I got instant clogs with these, i thought it was me. Then discovered my .4mm cleaning needle cant pass through 4 out of 5 of theses nozzles brand new out of the bag. I tried installing the one nozzle that the needle was able to pass through but still instant clog. The inner surfaces are rough and holes and inconsistent as well as being under sized. After i tried a different brand nozzle, machine prints like a charm. RECOMMEND DO NOT BUY THESE.

These are quality nozzles, however they do NOT fit standard sockets. You will need to use a crescent (adjustable spanner) wrench. None of my Imperial or metric open end wrenches fit 100% correctly to tighten and not scar or otherwise damage the metal.