






🔧 Lock in flawless prints with BIQU’s precision connectors — because your 3D setup deserves the best!
The BIQU PC4-M10 Pneumatic Connector Fittings are a pack of 10 high-quality, stainless steel male straight couplers designed for 4mm PTFE tubes. Compatible with popular 3D printers like Ender-3, Ender-3 V2, and CR10, these connectors provide a secure, oxidation-resistant connection optimized for 1.75mm filament Bowden extruders, ensuring reliable, long-distance filament feeding.


































| Brand | BIQU |
| Connector Type | Coupling |
| Item dimensions L x W x H | 0.39 x 0.39 x 0.74 inches |
| Material | Alloy Steel |
| Size | 4mm |
| Thread Size | 6mm |
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Reliable, Tight Fit
These BIQU PC4-M10 connectors are exactly what I need to my filament containers. They hold the PTFE tube firmly, install easily, and stay put during long prints. No more wobbly or loose fittings. The only thing I can see is the thread part of the connector seem to be smaller than other connectors. Not by much but might make a difference. Solid quality and a great price for a 10-pack. Would definitely buy again.
1**Y
Fits and works great
Fits and works great
O**S
perfect and great quality
great for building a split tool for my 3d print
C**T
Worked
Worked great for me. I printed a y splitter to add an external spool to my A1 and so far have had no problem with feeding through or disconnecting tubing.
T**.
Work well for ptfe passthrough points.
If you are in need for these, (and those with projects where they are needed, you'll know) then these are decent and will work. I've used them in dry box projects, and these worked just fine.
A**S
Great quality.
Excellent quality. I've used all of them without issue. Locks in the ptfe tube nicely and easy to remove.
S**E
Excellent connectors
I needed these for a y-splitter to run 2 external spools to my Bambu A1 w/AMS Lite so that I could have 6 spools hooked up at all time. They worked beautifully. I couldn't be happier with them. And I will definitely be going straight for these when I have projects that require them in the future.
3**D
Still best in the 3D business
Mine has survived at least 200 coupling and decoupling events with my ever changing maze of tubes. Always works great with zero debris buildup
Trustpilot
1 month ago
2 weeks ago