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 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.

The input end of the Endor 3 takes a 4mm thread, not the 10mm thread on these.

I have two Tevo Tornadoes and these fitting are 100x better than the fittings that come as stock. I replaced the existing failed ones and havent had an issue since. I recommend these.

These are not what you are looking for. These are recessed into the body giving it a shoulder for your filament to hang up on

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.

Very nice Pneumatic connectors. The 4mm OD teflon tube fits very securely in them. It can be passed completely through if desired. When the spring loaded ring is released it is quite secure.

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!

good quality, thank you

Works well in my Anycubic i3 Meg-5 3D printer.

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.