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 replace the stock plastic parts on my Rep2Box. also adding them to my MMU2, after i print out the adapters

They came in as described and do their job. Several weeks in with no issues. If you install them correctly you shouldnt have any problems with the bowden tube slipping, ripping, etc. Good price and value for the product.

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

A good Fitting, but this does not fit a stock CR-10. Use PC4-M6 fittings instead.

This products photos are misleading - they clearly show the fitting as having a beveled and tight interior edge, yet the fittings that arrived have an open interior Thats an issue, as the open interior allows the PTFE tube to move more freely. More movement directly leads to a shorter lifespan of the fitting and can also cause issues with filament loading We run a printer shop with twelve printers running continuously and I need parts that are dependable, not fittings that will wear out over the span of twenty hours of printing Please either update your listing photos or start sending out fittings with beveled edges. As it is, i can only recommend these as a cheap and temporary fix

These PTFE fittings are of good quality and work well with my HICTOP 3D-12 printer setup.

These PTFE fittings are of great quality. The finish is perfect, the threads are clean, and the snap action works perfect. I used one on the top of my E3D V6 clone extruder and another was used for a air tight filament canister project. Im very happy with these fittings.

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.

A must need item to have for Prusa Mmu2s

These connector are not of a standard size or thread pitch. If youre intending to mate these to standard metric hardware, youll have issues. If its your intent to use these as a custom fit, they may very well work for you, just dont expect to find nuts or threaded receptacles that will accept them.