BIQU PC4-M10 Pneumatic Connector Fittings Bowden Tube Coupler Male Straight PTFE Tube Push for E3D-V6 Bowden Extruder 3D Printer (Pack of 10pcs)

As others have mentioned, these are not as pictured. They have a gap from the threaded opening to the inner diameter. It is not simply beveled to the inner diameter as shown in the picture. I also received teflon tape or thread compound on mine, which makes me question whether they are even new. I am using them for a drybox so they should work fine. But for those using them for bowden extruders, it might cause problems. 2 stars for incorrect description and questionable newness.

good quality, thank you

I used these to convert the plate holder for the tubes on my mk3s with mmu2s. I printed the part from thingiverse and these screwed right in no problem and work like a charm.

Items received did not have beveled edge as shown in the product description, instead have a hard edge which makes it difficult to start filament through when fitting is screwed in to mounting. Specifically ordered this product over other brands because of the beveled edge and did not get the product advertised.

on time worked well

I am using these connectors with PTFE tubes on my various printers and so far theyve been perfect. No issues, and the product quality seems excellent.

Perfect for my Tevo Tornado!

These nozzles are nice with good packaging. Didnt have any problems with connections to the Biden tube of my 3d printer. I would recommend these without a doubt!

These connector are not of a standard size or thread pitch. If youre intending to mate these to standard metric hardware, youll have issues. If its your intent to use these as a custom fit, they may very well work for you, just dont expect to find nuts or threaded receptacles that will accept them.

I used these to build out direct drive hotends for my printers and they are much better than the factory fittings. These PTFE tube connectors are pretty standard, so no surprises here.