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

I switched my geeetech i3 pro b to a Bowden extruder so I needed these for the job. Not sure if they are better than factory but since these strip out from taking the tubing in and out its good to have a few extra. They are holding great so far.

These PTFE fittings are of great quality. The finish is perfect, the threads are clean, and the snap action works perfect. I used one on the top of my E3D V6 clone extruder and another was used for a air tight filament canister project. Im very happy with these fittings.

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.

I have yet to encounter a connector like this where the small metal teeth internally dont break after some use. While these seem to hold up better than some, they still fail reasonably quickly. Its a good thing they come in large quantities for cheap.

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.

Solidly built parts for my Ender 3.

Good and proper. Used them to make a spool container for 3D printer filament.

A must need item to have for Prusa Mmu2s

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.

Setup to replace the one on top of my Tonxy X5S after it exploded off after a jam. This set appears to be good quality, solid, and works well. All have good spring action in the cuff, and the one in use is doing its job perfectly.