Creality K1 Nozzle Kit 0.4mm 0.6mm 0.8mm 3D Printer Nozzles,4pcs Hardened Steel Nozzle&4pcs Copper Alloy Extruder Nozzles,High Thermal Conductivity High Flow for Creality K1,K1 MAX,CR-M4,Ender 3 V3 KE

Bought this for my Creality K1, and it’s been a solid upgrade for my 3D printing projects. The kit, with its high-flow copper alloy nozzles (330W/m·k thermal conductivity) and durable hardened steel nozzles (7.8 Mohs hardness), handles everything from PLA to abrasive carbon fiber filaments with ease, supporting high-speed printing up to 600mm/s. Swapping nozzles is quick thanks to the K1’s design, and the nickel-plated copper nozzles ensure smooth extrusion with no clogging after 50+ hours of printing PETG and PLA-CF. The 0.6mm nozzle is my go-to for balancing detail and speed on functional parts, while the 0.8mm shines for larger models. My only issue, echoed in some Amazon reviews, is that the hardened steel nozzles struggled with PLA adhesion on my first layer until I tweaked bed leveling and temperature settings. The tin case is handy but tightly packed, making nozzle removal tricky without pliers. Overall, this kit’s versatility and quality make it a must-have for K1 users looking to expand their printing capabilities

“I couldn’t be happier with this purchase! The quality is outstanding, and it’s clear a lot of thought went into the design and functionality. This product has exceeded my expectations in every way, offering a perfect balance of performance, durability, and style.What truly sets this product apart is how well it delivers on its promises. It’s incredibly easy to use, and you can tell it’s built to last. Whether you’re looking for something reliable for everyday use or a high-performing option for special occasions, this is it.On top of all that, the value for the price is unbeatable. It feels like a premium product without the hefty price tag. If you’re on the fence about getting this, don’t hesitate—trust me, you won’t regret it. This is one of those rare finds that ticks every box!”

They were exactly as advertised but, my printer is apparently a unicorn! 😂They didn't fit in my printer but, it was my fault. The value was there and the quality seemed really good but, they wouldn't work with my assembly.

They work great with the k1 have so far only used the .4 nozzle but seems to be working great 👍

These nozzles are not supported by Creality's printers as they are all upgraded to the unicorn nozzles... Disappointing but I do not blame the seller, the manufacturer does not explain this... I didn't return as I intend on buying another hot end element that supports these nozzles...

Good creality nozzles.

I got a clogged nozzle on my K1 and ordered these to replace it. When they finally arrived I figured I'd try a hardened nozzle since I had it, even though I was only printing PLA. Unfortunately the filament just wanted to curl up on the end of the nozzle and i couldn't get a bit of filament to stick to the plate. I even tried a second hardened nozzle for kicks and had the same result. I had more failed prints in two hours than I'd had the entire time before I got these nozzles. I was about to contact Creality support thinking i had bigger issues but thought I'd try one of the regular chrome nozzles before giving up and wouldn't you know, my printer was back to its old self! This is the first hardened nozzle I've ever had so maybe they can't be used with PLA and I just didn't know? At any rate, I has no luck with the hardened nozzles with pla or pla +.On a side not, the nozzles being in a tin is neat and all but it's so small and they're so tightly packed in foam I had to use pliers to remove them. IMO a plastic bag would've been fine and probably cheaper too. Not a big deal, just kind of annoying.If I need more nozzles down the road I'll just pickup some of the cheaper, brass ones.

Are there better nozzles out there, yes. But these are reliable hardened steel nozzles. They come nicely packaged from Creality, and they give you several .4mm nozzles in the kit since that's the standard.