Premium pushin ptfe tube connector / ptfe tube coupler for OD4mm ptfe tubing. This pu4 pneumatic fitting supports 360° rotation with reliable leakproof sealing up to 1 MPa pressure. Toolfree pushfit installation, heatresistant housing for harsh operating conditions. Compatible with Bambu Lab A1/A1mini, P1P/P1S, X1/X1C/X1E, H2 series and Creator 5/Creator 5 Pro works as reliable bowden tube coupler replacement to deliver smooth filament feeding and lower jam risk.