Metal Pneumatic Coupler PC4-M6 with Collar
This is a custom Wham Bam all-metal pneumatic coupler that guarantees a great hold on your PTFE tube and easy release! Each coupler comes with a plastic locking collar. The thread is PC4-M6 is used on most extruders. Available as a single or in a 4 pack.
This couple is definitely better than all the other couplers and holds up a lot longer but just like Any other couple with this design it will soon fail, I have found that flanging the end of the Bwden tube as if you would a brake line system And I used a 3d printed push fitting so it pinches the tube where I've flanged it l, After I have done that I have not noticed any movement with the bowden tube