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The BIQU PC4-M10 Pneumatic Connector Fittings are precision-engineered stainless steel couplers designed for 3D printers like Ender-3 and E3D-V6 extruders. Featuring a 10mm thread and 4mm core diameter, these push-fit connectors ensure a secure, rust-resistant connection for 1.75mm filament PTFE tubes. Sold in packs of 10, they offer reliable, long-lasting performance to keep your printing setup flawless and efficient.

































| ASIN | B01IB81IHG |
| Batteries Included? | No |
| Batteries Required? | No |
| Best Sellers Rank | #49,634 in Industrial & Scientific ( See Top 100 in Industrial & Scientific ) #948 in 3D Printer Accessories |
| Brand | BIQU |
| Connector Type | Coupling |
| Customer Reviews | 4.7 4.7 out of 5 stars (1,077) |
| Date First Available | July 12, 2016 |
| Is Discontinued By Manufacturer | No |
| Item Package Quantity | 1 |
| Item Weight | 0.212 ounces |
| Item dimensions L x W x H | 0.39 x 0.39 x 0.74 inches |
| Manufacturer | BIQU |
| Material | Alloy Steel |
| Measurement System | metric |
| Number of Pieces | 10 |
| Part Number | BIQU-C305 |
| Product Dimensions | 0.39 x 0.39 x 0.74 inches |
| Set Name | 10pcs |
| Size | 4mm |
| Style | 10pcs |
| Thread Size | 6mm |
| Thread Type | Metric Parallel |
| UPC | 711176309315 |
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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.
S**R
Good value
Seems like a solid connector. I’m using for 3d print filament storage and they work great.
O**S
perfect and great quality
great for building a split tool for my 3d print
1**Y
Fits and works great
Fits and works great
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.
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.
I**T
I had broken tabs on my original fitting. These fittings are cheap and did the job as replacements. My PTFE tube is now secure.
P**L
These work fine with my BBl X1C
W**N
Does the job allowing PTFE tube through it for my filament dry boxes. Would buy again.
J**N
My stock one didn't work, the PTFE tube kept falling out, but this one has been working fine.
W**Y
Exactly.As described very easy to install seam to function perfectly very happy
Trustpilot
2 weeks ago
1 week ago