Review on Kingroon Printer Nozzles Hardened Extruder by Michael Lara

I needed a single 0.40 nozzle to print ABS-CF on a single part and this gave more value and possibly for larger nozzle orifices as filled filaments can sometimes clog the smaller ones. I was very surprised when I pulled out my regular MK8 wrench to tighten the glowing 260C hot nozzle on the heater block and it was impossible! I had to quickly dig out the box for the wrench that came with the kit. They have a round profile with incised flats, unlike the hardened V6 tips on my other hotend. I think I should always read reviews, no matter how many stars are at the top. I might buy a set anyway; Who knows. Anyway the ABS CF print quality was good for the first +100g which I think can be more than enough to ruin the brass. My plan is to keep it full time if the first prints on the ASA are ok. Maybe I'll buy more, but in principle it's enough for a lifetime!?!?