They came with the car. I do like them, so thank you. I don't the exact details on the make and model of the wheel. Since the crossfire has different wheel sizes from front to back. You might be able to put together a find. I did a good search using the following key words:

Mercedes SLK OE wheels chrome 5 spoke

I did find some examples came close: https://www.ebay.com/itm/375446690183



Look for wheels to fit the 350 SLK 2004

Benz 2004 350 SLK