Summary

Just another Bowden-tube-lock-clip. I dropped mine in the printhead too many times. When you use the front pins the printhead might be blocked from going in the max Y direction. See picture 4. It's more save to use the backpins. This is why the clip is mirrored.
You can customize the thickness in the customizer (the app found here on the right above).
The SCAD file is slightly different form the STL's and the picture but should fit even better. Let me know in the comments if you want any changes.