NOT A LEGO

Out of pure boredom, I modeled something similar to a lego, but almost the same product. Not only did I include the printable file formats, but I also included a detailed and dimensioned drawing interpreted by ASME standards as a pdf in case you want to model and make your own modifications and tolerances. Since it is half a block, you can always make the full block yourself with the given specifications in case you wanted a simple learning challenge :) It is preferable that you print with ABS material, but I've printed in PLA myself.