conector pneumático reto de encaixe rápido com rosca para hotend J-Head de impressora 3D 1,75 mm/3,0 mm

Finally, a fitting that actually stays put—I’ve had other push-in connectors wiggle loose over time, but this one grips the tubing firmly even with 3.0 mm PTFE. The threads were machined cleanly and seated perfectly into my J-head hotend without any binding.

The threads on this fitting were perfectly clean and cut, so it screwed into my J-Head block smoothly without any cross-threading. My 1.75mm PTFE tube locked in tight with no wiggle at all.

Finally stopped getting that annoying wiggle where the PTFE tube meets the hotend, this push-in fitting locks it down tight for my 1.75mm Bowden setup. The thread seated perfectly on the J-head and the release ring is easy to push when I need to swap filament.