They turned out half decent, though I printed these particular ones on a newly assembled printer and there are some cosmetic defects. She needs some tuning. My prusa has been busy pumping out replacement erector set parts of all things for our refurbished sets.
These are something I can just toss on a spare printer and have done in a day. So if someone needs a set, I really don't mind sending them out for the cost of materials and shipping. If they're desired in other colors, we can work something out and I can even add a splash of color in and make the arrow a contrasting color if you'd like to wait an extra day or two.
Though it should be noted that these are kind of experimental. I know a few people have tried using them, but I can't make any guarantees. Id like to fit them to my own truck, but if I'm running the risk of snapping my OEM's in the process I think I'd rather avoid that if possible. I can however redesign these if needed, but it didn't seem like anyone was having an issue with them.