This is a joke gift for the person or persons in your life that don't know much about vehicles. The idea came from the old joke referencing a person asking for a 710 cap at an auto parts store.
This model is designed in 3 parts to resemble an engine oil cap. It, most likely, will not fit any engine, so don't try. The Oil cap and screw thread have a hole where you can stick a toothpick so that the oil cap and screw thread will align perfectly. Screw in a small screw into the back of the Card to join the oil cap. Ensure the OIL is upside down displaying 710 as shown in the pictures.
This is a Commercial Use, No Derivative where you can print these out for other people if you wish.