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 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.

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.

Purchased this pack to replace a broken connector on my sons Creality Ender 3 Pro. This popped right in and had him back up and running within minutes. Construction seems at least as good as the original part, maybe even a bit better. And since its a large pack, we have plenty of extras if it fails in the future!

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

Setting up 5 color 3d printing was a bit of a challenge until I saw a mod that suggested using these in place of the clamps that were specified. This was a much better option. They grasp the PTFE tubing perfectly and hold it while also allowing easy removal.

3 D printer hardware.

The fittings I received are NOT the ones shown in the photos. The ones in the photos show FUSUN 4 is printed on the black release cap, but the ones I got have DONT stamped into the plastic. The DONT ones are very cheaply made and are famous for not releasing when they should and, on the extruder, often breaking and releasing filament to pile up everywhere. They will work for a while but thats all I can give them. Go for the WITBOT ones instead.

Exactly what I needed and works great!

Just spare parts if needes

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.