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 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.

I do not like writing reviews, but like this item

I got these to modify my Prusa MMU2S, so that I could remove the PTFE tubing from the back of it. Ive had them in for almost a year, and so far theyve held up great. No issues with pinching the tubing, poor hold, or difficulty removing the tubing.

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.

1 broke within 2 weeks of use. Guess for the price this is ok.

The item does not match the photos. I specifically purchased these because I thought the bottom was flat, not recessed.

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 ordered these because I needed them quickly. I was a little concerned about the quality because of the really low price compared to my normal source. I didn’t need to be concerned. These are very nicely made and every bit as good as my normal source. I may continue to use my normal source out of loyalty since they have provided me with other services as well as parts, but in a pinch I won’t hesitate to buy these again.

Theyre a snug fit for 4mm OD PTFE, perfect for dry boxes.

on time worked well