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

Used for 3D printer bowden extension (anet a8 and FLsun Plus). That is really, what I expected. Very fast shipping with Amazon Prime.

Bought these to replace the ones that came with my 3D printer and they work great very good quality and well-made. I obviously only needed to so there are many here to replace others in case I need to on Down the Line but the two I used are working great for the time being.

nice worked well

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

These nozzles are nice with good packaging. Didnt have any problems with connections to the Biden tube of my 3d printer. I would recommend these without a doubt!

Not what the picture shows in the listing, these have a large gap inner diameter allowing the PTFE tube to move around. Do not buy!

These seem to be good replacements for the hotend of the Creality Ender 3. They are solid, made a good connection, and had some sort of tape around the threads for a better connection.

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.

This supplier first delivered the wrong connectors, shipped the PC4-M6 connectors instead of the PC4-M10. The next day I had a new shipment of the correct connectors, but after seeing flakes of the chrome plating in the bag I started testing each connector to see if they would actually lock on the bowden tubing and found that only 6 of the 10 connectors would even work. The other 4 would not even grip the tubing at all, so a big failure in quality control of the picked connectors. Not very happy with the connectors that were supplied, but they were quick to replace the incorrect shipment. Update: The seller is going to send another replacement set of connectors as soon as possible to makeup for the shipping mistakes and the defective connectors. They are making a clear effort to make sure Im satisfied with my purchase and their customer service.

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