These replacement bins fit the Harbor Freight 20-bin storage case SKU 93928, 62778.
I wanted more of the smaller bins that come with the case, so made these drop-in replacements.
The original bins have small 3mm feet on each corner that fit into recesses in the case and make the bins 50mm tall. I omitted those feet so they can be printed with no support so these are 47mm tall. This doesn't really affect the function of the bins unless you want them to stay in place without other bins surrounding them.
The author hasn't provided the model origin yet.