Hi there, the arrow is a 3d image only. The fillament used for the caps is Ngen. We also wish they were compact enough. But for now in our Campervan it's to big. There are smaller ones in the market, but for on the road that's to much investment at the moment.

@Camperend_StofenSteen You also 3D printed that big blue arrow from the same plastic I think? When these printers are compact enough to be mobile for on-the-road repairs/ projects, perhaps we’ll invest…