Some PETG boogers, but seems like a good nozzle so far! Normal brass profiles work fine.

(review of DUROZZLE Tungsten Carbide Nextruder Nozzle )I have not had any problems with this nozzle so far.I am mostly using it for glow-in-the-dark PLA, so the filament is abrasive, but I am not pushing high temperatures or difficult print settings. It installed fine, printed normally, and I have not noticed clogging, strange extrusion issues, or obvious wear yet.The real test will be longer-term use. A couple of spools of GitD filament is a decent start, but not enough for me to make big claims about how wear-resistant it is. So far, though, it has handled the job without complaint.For abrasive PLA on a Nextruder setup, this seems like a solid option.

Good print results. The 0,4mm nozzle has a light leakage between the tube and M6 screw. Coldpull is not so easy compared to E3D nozzles.
No wear at all after hours of use.
Attention must be payed, not to dammage the inner boring edge during cleaning. (PCD is a little brittle)
The tube filament inlet has been improved to a conic shape. Now almost as good ass original E3D nozzles.
No more filament blocking in the extruder.
Shipping took a little longer than forseen.
Perfect packaging of nozzles.

I bought this for my h2c and it's been great so far. It holds temp really well and engineering filaments work great with it.

Please see my disclaimer for Vine provided items at the end of this review.Compared to tungsten carbide tips from the big namebrand 3d printer manufacturers, the Durozzle comes in at a lower price point. While I can not say the quality is truly on par with those much more expensive nozzles, my limited experience with the budget option has me more than satisfied.I got this tip in expectation of purchasing a Prusa XL last year, but due to some unfortunate circumstances, those plans have not been possible yet. Even so, I have seen the performance of these carbide nozzles on my other machines and have been impressed.For printing abrasive materials, tungsten carbide is an excellent fit. Hardened steel is often used for this task due to its' toughness. The downside is that steel has poor thermal conductivity and can impact thermal control of the filament melting. Tungsten carbide offers vastly superior thermal conductivity, while being more tough than most materials on the planet. I do not know if it is possible to wear out one of these tips, but you would certainly spend a long time attempting to do so.The one achilles heel of a TC nozzle is that the TC is brittle. It will not handle impacts with hard surfaces well, and will likely crack. So be careful when using a TC nozzle to not ram it into things like a spring steel bed.These Durozzle nozzles are so cheap for what you get, it is worth it for experimentation alone.Give it a go.Price: $39.90 (at time of order)Quality: GoodValue: GoodVine Review Program Disclaimer:My goal, as part of the Vine program, is to provide clear and informant feedback on product details that matter to YOU. I review every item from the position of a product I have PAID for. Cost, Quality, and Value are all vital points in the decision to purchase a product. Leave me a thumbs up if I've helped you determine if a product is worth buying.