I know for a fact it works for Save A Lot carts and likely will for others. with this print you can unlock the cart and remove it. easily stores on any key ring. To use: Insert fully into opening and move it to the right until you hear a click, push forward unlocking the cart and then remove. Added Full coin size stl and scad files for both. I know my coding layout sucks. I still push the cart back to where it came from. I made this because there are times I don't have a quarter. if you print one of my files and have issues, just want something tweaked or have ideals on how to make it better. I want your feed back, bad or good.