Keyless entry adapter for your NC Miata. I tried buying one of amazon and it broke the same day, so I printed a replacement. I would recommend printing this in something heat resistant, I used ABS. The base fits tightly onto the ignition so I would imagine you will need to fine tune sizing for your print setup. Prints best in a orientation with the circumference of the base on its short edge and the wide flat sections perpendicular to the print plate.