Polystyrene auto plate inserts are made of white 20-mil polystyrene sheet stock. Plate inserts are digitally printed to enable the use of your multi-color logo. We can use your artwork, or we can help you with a new design. There will be no art charge for most designs. Please allow a minimum of 10 working days for production after acceptance of artwork by manufacturer. Auto plate inserts measure 6" x 12". Pre-drilled round holes are standard. Oval holes are optional at an extra cost of .08 per plate.