This keychain, modeled after Pontiac's dart logo is designed to be printed on a multi-color printer with its 3 colors, red, white, and black.

The keychain is 3mm thick so it is strong, yet not bulky. The inner diameter of the ring is 5mm.

I suggest ordering the sequence of colors: red; white; black, in order to not start of with thin lines of filament. Also print the first layer slow for a greater chance of success.