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

Threads are enormous, not 6mm

Got these for my E3D V6 clone. They hold the bowden tube just fine. And plenty of extras should last a long time.

What I received did not look like the picture. They were all used and had Teflon pieces attached to show they had clearly been used or resold

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.

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.

good quality, thank you

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.

I have replaced every connection point for Bowden tubing on my Ender 3 V2 with these connectors because there is no issues with travel at all. I even went as far as to mill out and thread a larger hole on my all metal hot end and extruder housing to be able to fit these. Running 2mm retraction settings on a dual gear Bowden feeder flawlessly.

As others have noted, these are cheap. It seems about a third will not release the tubing when depressed.

I ordered 10 new Push 3D-V6 Fitting Connector but I only received 7. Of the 7 Connectors, each has Teflon on them (not as advertised), and the Teflon appears to have thread damage.