Clogged and was then unusable no matter how hard I tried to clean it.

I am using it now with Glass Fill without complication

IMPORTANT:The brass bushing above the heatbreak was 1-2 thousandths of an inch too wide to install without sanding.If you do not thoroughly cleaned the inside of your hotend, and sand down the bushing this nozzle will not fit a k1, k1c, or k1 max.If you have the ability to sand this bushing, have at it! Its a fantastic and durable/well made nozzle otherwise.

Easy install on my elegoo printer. Lasted me a few years now and runs carbon fiber great.

Pretty happy with this nozzle. Holds temperature much more consistent than the stock nozzle. Noticed prints were better. Only had it a couple weeks, but it's supposed to last forever basically. I didn't have much luck with this brand carbide tip. What a difference with the diamond! Thing did clog right after I wrote this. So I edited it. I rarely get clogs. So kinda disappointing