Lock clip for pc4 pneumatic fittings and PTFE tube connectors. They are slightly thinner than the normal ones you can buy online so that they fit perfectly where they should be without strain and perform flawlesslly.

This lock clip snaps in place right under the plastic piece that you would push in to make the fitting release the PTFE/Bowden tube. This clip ensures there is no unintended movement or release of the PTFE tube during printer operation.

If you have an X1-C, a P1S, or converted a P1P into a P1S then you should have already experienced installing a clip identical to this one onto the lock fitting on the PTFE tube where it enters the chamber.

I printed mine with eSun PETG and they work great. You can print these in any material you like although having the small bit of flexibility PETG provides allows you to install and remove the locks easily. If you are replacing the one inside the chamber then i would avoid PLA.