These are to suit Romafa stainless steel meter housings (FAS0931A) for Flexi-Coil / New Holland / Case IH 50 series air carts. Designed to be a friction fit, just pop them in with the tab to an accessable place so you can pull them out easily. Not sure if the TPU shrunk or if it was something with this particular X1C, but I had to scale up to get them to tightly fit (Romafa end size is 3.25" for reference). For the meter side I would reduce the height 20-50% to make it easier to get them in there, kind of tight with the VR motor mounts otherwise.

This was drawn up in bambu studio in the time it took solidworks to load to a useable state.

Note: If you scale to 92.38% these will fit a 6xx series seedhawk tank