Flux Capacitor Back to The Future Spark Plug Caps Nipples - original parts in black Original and exact size to the movie prop, these are the black version so will need spray painting in the dull orange colour to become a exact match to the original’s. I have personally cleaned the set and degreased them. To paint them you will need to wire wool the surface and then a grey primer coat. Paint them with a Humbrol AD6018 No 18 Orange Spray paint and give 24 hours between coats to dry fully (to prevent fingerprints when fitting to your Torr Relays) Thanks for looking.